« iepriekšējāTurpināt »
VELOCITY WITH GIVEN LOADS.
168, 19 j0
A PRACTICAL TABLE OF THE HEATING-SURFACES CAPABLE OF PRODUCING » GIVEN|4. A practic à Table of the Velocity of
Engines with given Loads, and, vice Load Area of heating-surface of the boiler, in
versa, of the Load corresponding to a in gross
square feet DESCRIPTION OF THE ENGINE.
tons, the desired velocity
gi' sen Velocity.
per hour being
We have just given some examples of miles. miles. miles. miles. miles.
cases, in which it is wished to build an en
gine for a particalar end. The contrary sq. ft. sq. ft. sq. ft. sr
1. ft. Engine with wheel .. 5 ft.
case naturally presents itself afterwards. 36 54 71 89
107 Stroke of the piston 16 in. or 1.33 ft.
The question is, what effect may be expect46 68 91 113
136 Cylinders 11 inches, or 0.917 ft.
ed from a given engine, that is to say, from 75 55 83 110
165 Weight · 8 tons. 100 65
an engine already constructed, and the di97 130
462 194 or presumed friction 120 lbs.
mensions of which can be measured. 125 75 112 149
186 223 Effective presssure per sq.
In order to give here a practical and exinch in the boiler
tensive application of the formula which
resolve this question, we shall calculate, Engine with wheel 5 ft. 50 51 76 101 126
151 after the formula, § 1, a table of the velocity Stroke of the piston 16 in. or 1.33 ft. 75 60
gr, 120 150 180
which engines, similar to those of Liverpool, Cylinders, 12 inches, or 1 ft.
175 210 viz. with 11 and 12 in. cylinders, will acWeight 10 tons. 125 80 120 159 199 239
quire with given loads. By that means, or presumed friction 150 lbs.
150 90 ! 134 179 223 268 Effective pressure per sq.
the experiments, which we are going to 175 99 149 198 248 297
make on the Liverpool engines, will serve inch in the boiler 50 lbs. 196 107 161 215 268
to verify, by facts, the accuracy of the forEngine with wheel
mulæ, which we have deduced from princi5 ft. 50 56 83 111
138 166 Stroke of the piston 16 in. or 1.33 ft.
ple. 75 65 98 30 163 195 Cylinders 13 inches, or 1.083 ft.
75 112 50 187 224 As we think that this table, like the preWeight
11 tons. 125 85 127 169 211 253 ceding ones, may be useful to practical or presumed friction
150 94 141 188 235 282 men, in showing them the results, without Effective pressure per sq. 175 104 156 208 260
obliging them to make the calculation, we inch in the boiler 50 lbs. 200 114 171 227 284
shall extend it further to engines of differ225 124 185 247
ent powers, such as are most in use on 231 126 189 251
railways. Engine with wheel
It will be remarked, that this table, giving 91 121
181 Stroke of the piston 16 in. or 1.33 ft. 75 70 106 141 176 211 the velocity corresponding to known loads, Cylinders 14 inches, or 1.166 ft.
naturally furnishes also the loads of the enWeight
gine, when, on the contrary, the velocity is or presumed friction
180 lbs. 150 100 149 | 199 249 298 given a priori. In like manner, as we Effective pressure per sq.
have necessarily been obliged to confine inch in the boiler 50 lbs. 200 119 178
ourselves, in each column, to the limit of 225 129 193 257
load which the engine is capable of draw250 139 208 277
ling at the pressure indicated, after the for269 146 219 291
mula in § 4; so it follows that the same
table gives equally the maximum loads for Engine with wheel
5 ft. 50 62 92 123 153 184 each pressure, as well as their correspond. Stroke of the piston 18 in. or 1.50 ft. 75 71 107 142 178 213 ing velocity. Cylinders 12 inches, or
100 81 121 162 202 242 Weight · · 11 tons. 125
In the last column, the state of the regu91 136 181 226
271 or presumed friction 165 lbs. / 150
lator is indicated as follows: when it is 100 151 201 251
301 Effective pressure per sq. 175 110 165 220 275
entirely open, we write 1; when only half inch in the boiler
open, $; etc. This relates to the follow221 128 192 256
ing tables, as well as to this one :
A PRACTICAL TABLE OF THE VELOCITY OF THE ENGINES WITH GIVEN LOADS, AND If the engine, instead of being in good OF THE LOAD CORRESPONDING TO A GIVEN VELOCITY.
order, loses its steam, either by leaks in the
boiler, or round the piston, or by the stufLoad in Velocity on a level in miles per
gross tons hour, the effective pressure per sq. State of ||fing boxes, or elsewhere, it is clear that the Description of the engine. tender in in. in the boiler being
effect must also be proportionately dimincluded. 50 lbs. 55 lbs. 60 lbs.
ulator. ished. miles. miles. miles.
If, by diminishing the opening of the Engine with cylinders 11 in. or 0.917 ft. 25 40.07 40.38 40.60
regulator, we let only a portion of the genStroke of the piston 16 in., or 1.33 ft.
50 31.34 91.58 $1.76 Wheel
erated steam penetrate into the cylinders, 5 ft. 75 25.74 25.93
the boiler continuing at first to furnish the
22.00 22.12 1 Area of heating surface 140 sq. ft.
125 18.96 19.10 19.21
same quantity, more steam will necessarily Or effective evaporating
16.75 16.88 16.97
be lost by the valves without acting on the power per hour
42 cu. ft.
Afterwards, as soon as the dimi, 175 15.12 15.21
nution of the steam thrown into the chim184 14.58 14.66 1
ney has moderated the fire, there will be less 202
steam generated, and that will consequently Engine with cylinders 12 in., or 1 ft.
34.48 34.71 34.91 1 Stroke of the piston 16 in., or 1.33 ft.
regulate the velocity. This is the case of 50 27.80
all small loads drawn by the engines. The 5 ft.
75 23.29 23.47 23.60 Friction
speed is never suffered to augment sufficientArea of heating surface 140 sq. ft. 125 17.60 17.73 17.83
ly to risk an accident by too rapida motion of Or effective evaporating
150 15.58 15.80 15.89
the piston or other parts of the mechanism. power per hour
42 cu. ft.
When the engine-men perceive that the 195 13.11 13.21 13.23
train would run too fast, they diminish the 200 12.98 13.05 1
aperture of the regulator, and make a mod217 12.23 12.30 1
erate fire, in order to maintain a reasonable 255
speed. In all the experiments we shall Engine with cylinders 13 in., or 1.033 ft. 50 29.03 29.25 29.42
have occasion to relate below, we shall only Stroke of the piston 16 in., or 1.33 st.
75 24.68 24.86
once see, as we have already observed, the
1 Area of heating surface
160 sq. ft.
speed rise to 35 miles an hour, which is the
1 Or effective evaporating
150 17.02 17.15 17.24
greatest speed to which the engines have power per hour
48 cu. ft.
been hitherto submitted, excepting for a
the engines, with the indicative pressure, 256 11.92 11.99
are fixed by the necessity of the resistance 281
on the piston not being greater than the Engine with cylinders 14 in., or 1.166 ft. 50
29.83 30.06 30.12 Stroke of the piston 16 in., or 1.33 ft.
force that must move it, as we have already
75 25.69 25.88 26.03 Friction
said. With that maximum load, we see that 180 lbs.
100 22.56 22.73 22.86 1 Area of heating surface 180 sq. ft. 125 20.11 20.26 20.37
an eleven-inch cylinder engine, working at Or effective evaporating
18.14 18.28 18.38 1 60 lbs. effective pressure, will still maintain power per hour
54 cu. ft. 175 16.52 16.64 16.74 1 a velocity of 134 miles ; and a twelve-inch
200 15.17 15.28 15.37 1 cylinder engine, with an effective pressure 225 14.02 14.12 14.20 1 of 55 lbs., will still maintain a speed of 12 250 13.03 13.13 13.20
miles an hour. These velocities are those 269 12.37 12.46 12.53
which will take place if the engine works in 298
11.57 11.63 1 327
its right state ; that is to say, if the valve is Engine with cylinders 12 in., or 1 ft.
fixed for a pressure of 60 lbs. or 55 lbs.
50 26.16 26.36 26.51 1 Stroke of the piston 18 in., or 1.50 ft. .
75 22.57 22.74
But if it should happen that the valve be Friction
only regulated for a pressure of 50 lbs., Area of heating surface 160 sq. ft.
17.71 17.85 17.95
and the pressure of 60 lbs. or 55 lbs. be Or effective evaporating
150 15.99 16.11 16.20
produced by an extraordinary rising of the power per hour
48 cu. ft.
valve and by dint of losing steam, that is to 200 13.39 13.49 13.56
say, only because the steam above 50 lbs. 221 12.53 12.63
cannot escape as quickly as it is generated, 246 11.73 11.80 1
then it is clear that although the evaporating 270
power of the boiler remains the same, the
effective part of that power will be considWe remark here, as we have said above,||vantage we observe here in favor of a erably reduced, and, consequently, also the that the whole influence of the pressure greater pressure is only owing to the fire velocity. It is for that reason that, in the bears upon the limit of the load, but that its being in that case naturally more intense ; experiments, we shall see the speed go effect is almost insensible on the velocity. | a circumstance from which results, not that sometimes down to two or three miles an This result agrees with the principle ; for there is more water evaparated, but the hour. But the state of the valve must then if the pressure required on the piston to same quantity, notwithstanding a higher be observed. The elevated pressure will move the load, be, for instance, 46 lbs. per pressure.
be seen to be produced only by an enorsquare inch, is it not true that, provided the These tables show the effect that may| mous loss of steam, and it will be easy, by steam be abundantly furnished at that pres- be expected from an engine of given pro- the rising of the valve, to account for the sure, by the heating surface, it is of little portions, in regard either to the speed or to diminution of speed. consequence whether it be at first col- the load; but it is understood that the effect In the cases of marimum load, it is evilected in the boiler at a pressure of 75 lbs. can only be produced if the engine is put|| dent that the steam will be spent by the cylor 65 lbs. or at any other degree? Finally, in a situation to apply all its power. inder, at the same pressure at which it has at the moment of acting, it must any how If, for instance, instead of the fire being been generated in the boiler, and that the be transformed into steane at 46 lbs. pres-sufficiently animated, it is left to languish, peed of the piston will be equal to the sure, and the speed will depend solely on the quantity of water evaporated per minute uickness with which the steam is generatthe quantity of steam at 46 lbs, that thell will be diminished, and at the same time d. This fact has been proved in a genboiler will have furnished. The small ad- the effect of the engine.
ral manner in $5 of the present article,
It may be verified here by calculating the From these different inclinations, we see | exactly in tons, cwts., quarters, and pounds. velocity with which the quantity of steam, that the same train presents various degrees The tender cartwrights were not weighed, generated in a minute, would cross the cyl- of resistance, according to the part of the but they are reckoned at their average inders without any alteration or reduction road travelled over, because the gravity of weight of 5ft. when a fresh supply of water of pressure. The velocity of the engine the total mass in motion becomes an allevi-is taken in on the road, and 5 t. only in the resulting from it, will be found to coincide ation in the descents, and an additional ob-contrary case. exactly with that indicated in the table. stacle in the rising ground.
We have marked the state of the weather, This is a proof that, in case the engine only The result is, that a train of 100 t., offers because it is a known fact that with the advances at that speed, the pressure in the on a dead level a resistance of 800 lbs. ; wind a-head, and still more with a sidecylinder is equal to that in the boiler. besides the friction of the engine ; and that wind that presses the flange of the wheels
Those cases of limit roads are those of the same train, if it is, for instance, drawn against the rails, the resistance of the train which we have made use to determine the by an engine weighing 10 t., will, on arriv-is augmented. Finally we have also menfriction of the loaded engine, and we seeing at an ascent of the offer a resistance of tioned the temperature of the water in the here the principle justified, of which we then 3,366 lbs., which upon a dead level would tender, in order that the reader may judge made use, viz. that in case the speed of be equal to the resistance of a train of of the influence of that circumstance ; and these engines is under 12 miles an hour, |421 t.
we have given the date of each of the exthe pressure in the cylinder is the same as In fact, if we observe that a ton weighsperiments as a means of verification. in the boiler. 2,240 lbs., we shall find for the resistance :
(To be Continued.) We have one observation more to make, | 100 x 8 lbs. 800 lbs. ; resistance I witnessed at the capitol with great which is, that in the engines there always
owing to the pleasure on Monday last, Mr. Smith exists a small loss, which we have not ta
friction. ken into account in our calculation ; that is
Cram's (of the city of New-York) inven. 100 X 2,240 lbs. to say, the loss of the steam which, at each
tion for overcoming an elevation in Rail.
2,333 lbs. resistance stroke of the piston, fills the passages that
road transportation of 440 feet to the mile. lead from the slides to the cylinders. It
owing to the It was performed with expedition by a would be easy to take it into account, by
gravity of the single stroke perpendicular engine, which the measures taken on each engine, of the
train, on a in point of power suffers much in comdiameter and length of these passages ; but
plane inclined parison with a double stroke Locomotive at ob.
Engine. this loss is very insignificant, and would only complicate the calculation without any 10 x 2,240 lbs.
His plan, as exhibted, puts at rest all
233 lbs. similar re- || doubt as to the practicability of ascendadvantage.
sistance owing and descending hills from 450 to 600 ing to the
feet to the mile, with certainty and secu. ARTICLE VII.
gravity of the rity. As to the certainty of overcoming
elevation and inclination, the cog-wheels
engine. CONFIRMATION OF THE ABOVE FORMULA
and ratchets as arranged satisfactorily
show. 3,366 lbs. total resist
As to the security, it is to be
found in the introduction of his hydro§ 1. Experiments on the Velocity and
ance, (not in
cluding the static cylinder attached to the car which Load of the Engines.
friction of the
is designed to check the train of cars in As a verification of the formulæ we have
ascending should any accident befal the laid down, and with a view to enable our
to that of a
engine, and to regulate their velocity in readers to rest their calculations on material
load of 336 descending, or check them altogether. . facts, we shall give here a series of experi
+421 t. on
The accuracy of the principle in both
cases is perfectly clear, and promises to ments undertaken by us, in order to ascer
be of incalculable value in the present tain the speed with which the engines draw That is the manner in which we have different loads at different degrees of pres- calculated the real load of the engine on will be generally adopted upon the score
of improvement; and I doubt not it sure of the steam, in their daily and regular|| the different slopes it had to pass over of economy as to time and money; but work. during its journey.
above all in the preservation of human These experiments were made on the The following column marks the pres-life, which his plan so effectually guaranLiverpool and Manchester Railway, the sure in the boiler, expressed first by the lees, in comparison with the present mode section of which, according to a levelling state of the balance, and then by its equiva- ||of overcoming a trifling elevation by stamade in the month of August 1833, by Mr. lent on the mercurial gauge. Thus, when |tionary power, committing our lives to Dixon, resident engineer, is as follows. | the balance, fixed at 57, rose by the blow- the hazard of a single rope. We only give the part travelled over by the ing to 58, we have written 57–58; and as
Fulton. locomotive engines; there are, besides, for the Atlas, for instance, that state of under the city of Liverpool, three tunnels the balance corresponds with an effective NOTICE TO RAILROAD CONworked by separate stationary steam enpressure by the mercurial gauge of 61 lbs.,
TRACTORS. gines. we have written 57-58 = 61 lb.
THE First Division of the BANGOR and OLD The railway, on leaving the station We have also noted the state of the regu- | Stillwater, will be ready for contract by the 15th
TOWN RAILROAD, extending from Bangor to at Liverpool, until it terminales at Man-lator ; but we must add, that the handle of inst., and sented proposals will be received for the chester, passes over the following distances the regulator in these engines not turning grading, masonry and bridging the same until the 25th and slopes: on a graduated circle, as it would be better inst, at the office of the subscriber in Bangor.
JOSHUA BARNEY, Engineer. Miles. that it should, we have only been able to Bangor, June 2, 1836.
22-20 0.53 dead level. estimate the degree of opening of the regu
TO CONTRACTORS. 5.23 descent
PROPOSALS will be received at the Office of the 1.47 ascent ਨ
Eastern Railroad Company, Boston, between the The speeds have been carefully taken 21h and 30th inst., for the grading and masonry of 1.87 dead level.
down, by inscribing in minutes and quart- said Road from East Busion to Newburyport, a dis1.39 descent
The line of this road is along a favorable country, 2.41 descent
passed before every quarter-mile stone of passing threugh Lynn, Salem, Beverly, and Ipswich, 6.60 descent
the road. These stones are numbered all which places will afford contractors every facility for 5.62 ascent at 7300 along the way. At the same moment we ready, and may be seen at the Office, after the rul
obtaining provisions, &c. Plans and Profiles will be 4.36 ascent
noted the pressure in the boiler as marked instant.
Satisfactory recommendations must accompany the 29.48 miles,
proposals of those who are unknown to the Engineer. The weight of the wagons was taken 22-130; JOHN M. FESSENDEN, Engineer,
tance of 337 miles
NOTICE TO CONTRACTORS.
OF VOLUME II. OF THE
TO BE PUBLISHED SEMI-WEEKLY. for the construction of all the Excavation, Embank-out the United States, with few exceptions. The fol In proposing to establish a SEMI-WEEKLY paper to ment and Walling not now under contract, together lowing sub-Agents have been engaged by the hunder- der the old title, but with extended dimensions, the with nearly all the Culverts and the greater portion of signed who will also attend to this business, viz.
subscriber acknowledges the favors of the past, and the Locks between Lynchburg and Maidens' Adven Horace Childs,
Henniker, N. H. solicits the continued patronage of a liberal public.ture.
Alexander McArthur, Mount Morris, N. Y. The reasons that induced him about a year since to The work now advertised embraces the twenty John Mahan,
do establish his weekly paper, operates with renewed miles between Columbia and the head of Maidens' Thomas H. Cushing,
Dover, N. H.
and inereasing force in favor of his present design.Adventure Pond, the eight miles between Seven Is. Ira Blake,
Wakefield, N. H. IIe shall endeavor, as it was originally intended, to land Falls and Scottsville, and about twenty isolated Amos Whitemore,. Fsq., Hancock, N. H.
make his paper American in all things ; and by idensections, reserved at the former letting, between Samuel Herrick, .
Springfield, Vermont. tifying itself with the interests and circumstances of Scottsville and Lynchburg.
Chicago-which from a recent wildnerness has adThe quantity of masonry offered is very great Capt. Isaac Damon, Northampton, Mass. vanced to a population of thirty-five hundred-and consisting of about two hundred Culverts of from three Lyinan Kingsly,
do of the rich, extensive, and rapiuly developing country to thirty feet span; nine Aqueducts, thirty-five Locks Elijah Halbert,
Waterloo, N. Y. of which it is the emporium, he hopes it may “grow a number of 'Wastes, with several farm and road Joseph Hebard,
Dunkirk, N. Y.
with their growth, and strengthen with their strength." Bridges.
Col. Sherman Peck, Hudson, Ohio.
As a record of passing events, curreut literature, of General plans and specifications of all the work, Andrew E. Turnbull, Lower Sandusky, Ohio. the march of agriculture, commerce and manufactures, and special plans of the most important Culverts and William J. Turnbull,
do and especially of the progress of internal improvements, Aqueducts, will be found at the oflices of the several Sabried Dodge, Esq., (Civil Engineer,) Ohio. of which this State, by her recent passage of the acı Principal Assistant Engineers on the line of the Canal. Booz M. Atherton, Esq. New-Philadelphia, Ohio. for the construction of the “ Illinois and Michigan The work will be prepared for examination by the Stephen Daniels,
Canal," has commenced her great and auspicious sys25th Julyl; but mechanics, well recommended, desir John Rodgers,
Louisville, Kentucky. tem, it will aim, as ever, to be accurately and early ous of immediate employment, can obtain coniracts Jahn Tililson,
St. Francisville, Lous'a. informed, and thus endeavor to consult alike the tastes for the construction of a number of Culverts at private Capt. John Bottom, Tona wanda, Penn. and wants of the community with which it is identified. letting.
Nehemiah Osborn, Rochester, N. Y. With party, as generally understood, it will have as Persons offering to contraci, who are unknown to Bridges on the above plan are to be seen at the fol- little to do as possible. Its politics will be the Consti-. the subscriber, or any of the Assistant Engineers, will lowing localities, viz. On the main road leading from turion-its party, the Country. be expected to accompany their proposals by the usual Baltimore to Washington, two miles from the former With this brief explanation of its future course, and certificates of characier and ability.
place. Across the Metawamkeag river on the Mili- his thanks for the more than expectcd encouragement CHARLES ELLET, Jr., iary road, in Maine. On the National road in Illinois, he has already received, the subscriber again ventures Chief Engineer of the James River at sundry points. On the Baltimore and Susquehan. to solicit the continued patronage and extended sup
and Kanawha Company. na Rrailroad at three points. On the Hudson and port of all who may feel' an interest in the principles NOTE.—The Dams, Guard-Locks, most the Patterson Railroad, in two places. On the Boston and here set forth. Bridges, and a number of Locks and Culverts, are Worcester Railroad, at several points. On the Bos It will be enlarged and otherwise greatly improved, reserved for a future letting. Persons visiting the line ton and Providence Railroad, at sundry points. Across and printed on superior paper, and forwarded to disfor the purpose of obtaining work, would do well to the Contocook river at Hancock, N. II. Across the tant subscribers by the earliest mails, enveloped in a call at the office of the Company in the city of Rich-Connecticut river at Haverhill, N. H. Across the strong wrapper. mond, where any information which they may desire Contoocook river, at Henniker, N. H. Across the
TERMS.—The AMERICAN will be published SEMIwill be cheerfully communicated.
Souhegan river, at Milford, N. H. Across the Ken. The valley of James River, between Lynchburg nebec river, at Waterville, in the state of Maine.scribing; $5 if paid at the expiration of six months, or
WEEKLY, at $4 per annum, if paid at ihe time of suband Richmond, is healthy. (20-ta 18) C. E. Jr. Across the Genesse river, at Mount Morris, New- $6 if payment is delayed to the end of the year. RAILROAD CAR WHEELS AND
York, and several other bridges are now in progress, Any person procuring five subscribers and re
The undersigned is about to fix his residence in mitting the pay in advance, will be entitled to a sixth BOXES, AND OTHER RAILROAD Rochester, Monroe country, New-York, where he copy gratis, or a deduction of TEN PER CENT: CASTINGS. will promptly attend to orders in this line of business
Persons at a distance remilling a $5 bill will receive to any practicable extent in the United States, Mary- the paper fifteen months. Also, AXLES furnished and fitted to wheels complete at the Jefferson Cotton and Wool Machine Fac.
MOSES LONG. land excepted.
** All sums to the amount of $ 10 and upwards may tory and Foundry, Paterson, N. J. All orders ad
General Agent of Col. S. H. Long.
be sent through the Post Office, at my expense. dressed to the subscribers at Paterson, or 60 Wall
Rochester, May 22d, 1836.
THOS, O. DAVIS. street, New-York, will be promptly attended to.
Chicago, March 25, 1836.
Subscriptions and Advertisements for the CHIAlso, Flange Tires, turned complete.
CAGO AMERICAN will be received at the Office of the J8 ROGERS, KÉTCHUM & GROSVENOR.
Railroad Journal, 132 Nassau street, by
D. K. MINOR. ALBANY EAGLE AIR FURNACE AND MACHINE SHOP.
* The Troy Iron and Nail Factory keeps con THE NEWCASTLE MANUFACTURING WILLIAM V. MANY manufactures to order, stantly for sale a very extensive assortment of Wrought COMPANY, incorporated by the State of Delaware, IRON CASTINGS for Gearing Mills and Factories of Spikes and Nails, from 380 10 inches, manufactured with a capital of 200,000 dollars, are prepared to exevery description.
by the subscriber's Patent Machinery, which afterecute in the first style and on liberal terins, at their ALSO—Steam Engines and Railroad Castings of five years successful operation, and now alnıost uni- extensive Finishing Shops and Foundries for Brass and every description.
versal use in the United States, (as well as England, Iron, situated in the town of Newcastle, Delaware, all The collection of Patterns for Machinery, is not where the subscriber obtained a patent,) are found orders for LOCOMOTIVE and other Steam Engines, equalled in the United States.
and for CASTINGS of every description in Brass or RAILWAY IRON.
RAILROAD WORK of all kinds finished in having countersink heads suitable w the holes in iron the best manner, and at the shortest notice. 95 tons of 1 inch by : inch. Flat Bars in lengths rails, to any amount and on short notice. Almost all 200 do 11 do do of 14 to 15 feet, counter the Railroads now in progress in the United States are
Orders to be addressed to
MR. EDWARD A. G. YOUNG, 40 do 11 da # do sunk holes, ends cut at fastened with Spikes made at the above named fac800
do do 2 i do an angle of 45 degrees, ll tory-for which purpose they are found invaluable,
Superintendent, Newcastle, Delaware.
feb 20-ytf 800 do 24 do do with splicing plates and as their adhesion is more than double any common soon expected. nails to suit. spikes made by the hammer.
NOTICE OF THE NEW-YORK AND 250 do. of Edge Rails of 36 lbs. per yard, with the * All orders directed to the Agent, Troy, N. Y., requisite chairs, keys, and pins. will be punctually attended to.
ERIE RAILROAD COMPANY. Wrought Iron Rims of 30, 33, and 36 inches diam
HENRY BURDEN, Agent. THE Company hereby withdraw their Advertiseeter for Wheels of Railway Cars, and of 60 inches Troy, N. Y., July, 1831.
ment of 26th April
, in consequence of their inability diameter for Locomotive Wheels.
Spikes are kept for sale, at factory prices, by I. | to prepare in time, the portions of the line proposed to Axles of 2, 23, 25, 3, 33, 34, and 34 inches in di: & 1. Townsend, Albany, and the principal Iron Mer: be let on the 30th June, at Binghampton, and on the ameter, for Railway Cars and Locomotives, of patent chants in Albany and Troy ; J.I. Brower, 22:2 Water 11th of July at Monticello. Future notice shall be iron. The above will be sold free of duty, to State Gov. / street, New-York; A. M. Jones, Philadelphia; T. given, when proposals will be received at the above
Janviers, Baltimore ; Degrand & Smith, Boston. places, for the same portions of the road. ernments and Incorporated Governments, and the
P. S.-Railrvad Companies would do well to for
JAMES G. KING, President. drawback taken in part payment.
ward their orders as early as practicable, as the sub). A. & G. RALSTON,
AMES' CELEBRATED SHOVELS, 9 South Front street, Philadelphia. scriber is desirous of extending the manufucturing so
SPADES, &c. Models and samples of all the different kinds of as to keep pace with the daily increasing demand for
his Spikes. Rails, Chairs, Pins, Wedges, Spikes, and Splicing
300 dozens Ames' superior back-strap Shovels 1J232m
150 do Plates, in use both in this country and Great Britain,
do do plain
do will be exhibited to those disposed to examine them.
150 do do do cast steel Shovels & Spades
ARCHIMEDES WORKS. 4-07 ]meowr
150 do do Gold-mining Shovels
do plated Spades
50 do do socket Shovels and Spades. Builder of a superior style of Passenger
New-York, February 12th, 1836. Together with Pick Axes, Churn Drills, and Crow
THE undersigned begs leave to inform the proprie: Bars (steel pointed,) mannfactured from Salisbury reCars for Railroads.
tors of Railroads that they are prepared to furnish all lined iron--for sale by the manufacturing agents, No. 264 Elizabeth street, near Bleecker street, kinds of Machinery for Railroads, Locomotive Engines
WITHERELL, AMES & CO. New-York. of any size, Car Wheels, such as are now in success
No. 2 Liberty street, New-York. RAILROAD COMPANIES would do well to exa- | ful operation on the Camden and Amboy Railroad,
BACKUS, AMES & CO. mine these Cars; a specimen of which may be seen none of which have failed-Castings of all kinds,
No. 8 State street, Albany. on that part of the New York and Harlaem Railroad | Wheels, Axles, and Boxes, furnished at shortest notice. N. B.-Also furnished to order, Shapes of every denow in operation.
H. R. DUNHAM & CO. scription, made from Salisbury refined Iron. 4-ytf
PUBLISHED WEEKLY, AT NO. 132 NASSAU STREET, NEW-YORK, AT FIVE DOLLARS PER ANNUM, PAYABLE IN ADVANCE.
D. K MINOR, Editor.]
SATURDAY, JUNE 18, 1836.
[VOLUME V.–No. 24.
What is the best and most economical NEW MODES OF HEATING BUILDircS. Editorial Notice: Questions respecting mode of heating dwelling-louses, schools, Mr. Mixor :-In No. 39, p. 98, of the Mag
Wheels; New Modes of Hearing and lecture rooms, factories or other large azine, your correspondent D*** F***** inBuildings,
369 Steam versus Water,
buildings ? By introducing leated air from quire's what is the best and most econom
370 Brief Hints for Spring Work,
a furnace—by pipes, heated by steam, car. Jical mode of heating large buildings. As Panubour on Locomotion, continued, 372|ried around the sides of each room, or by no one more able lias replied to this inquiry, Appendix to Pambour,
380 similar pipes filled with boiling water ? in the succeeding numbers, I venture to Advertisemenis,
What is the requisite size of a furnace to trouble you with a few casual observations
**** || Leat a room or a house of any given di-made by me during a few years residence AMERICAN RAILROAD JOURNAL.
mensions ? What should be the size of the in London ; and to request the publication
flue, for warm air, for heating the whole of them, in case you think them likely to NEW-YORK, JUNE 18, 1836.
house ; and what that of the branch Aue forbe of sufficient use to warrant their appear. We give in this Number, a part of the each particular room ?
ance in your valuable work. Appendix 10 Pambour on Locomotion ; it
What is the best construction for the
All the methods I have seen may be diwill be concluded in the next number.
furnace-pipes, &c. upon the hot air, steam,|| vided into tivo classes,—those in whic's or hot water plan; and wbat quantity of
water intervepes between the fire and the From the Mechanics' Magazine. fuel (wood or coal) will be consumed per
atmosphere,—and those in which the fire is The following Questions, which were pro-hour, if the fire be kept up, day and night, posed in a late number of the Mechanics' upon each plan, and what the cost?
uncovered, or separated from the atmosMagazine, are, in consequence of some mis. What are the requisite dimensions of the cond of these there is a well known objec
phere merely by places of iron. To the setakes then mule in them, again offered for furnace, boiler, pipes, &c. to be properly || eion, that the quality of the air is injured by consideration, with some inodifications and proportioned to the size of the whole buildadditions. ing and to each room; and what the whole contact with heated iron, in so great a de
gree is to cause headache and unpleasant QUESTIONS RESPECTING WATER-WHEELS,
cost? AND HEATING AND VENTILATING DWEL
Are pipes of hot water, which are used sensations in the eyes and even in the skin LING HOUSES, OR OTHER BUILDINGS.
to such advantage in England, sufficient for generally. By some this is said to be owCan a stream of water be used to as much are so intensely cold as ours sometimes are! ||air; by others, to the absorption of osygen
the purpose in a country where the wintersing to a change in the electric state of the advantage, or made to do as much work,
by the heated metal :- he remedy they both upon a horizontal wheel as upon a vertical
propose is, to evaporate water; but it has one; and if so, what is the best construc
not been shown to my satisfaction, that this tion for one, and what the cost of build The following communication is in reply entirely removes the evil, or that it does ing it?
10 some queries published in a late number, not introduce a dampness that is not al. Can the same quantity of water that is and now re-published in consequence of ways desirable. Besides, this principal oblet, in a thin sheet, upon a vertical wheel, several errors in the first publication. Thejection, there are frequently gases, dust, (that is a wheel upon a horizontal shatt,) be information it furnishes appears to be the smoke, and unpleasant odors, arising from made, in any way, to produce the same result of the observations of a practical stoves and open fires, and particularly from effect, when let in solid column upon a hor- man.
those complicated and expensive ratileizontal wheel, on a vertical shaft?
We may here remark that some success-traps, called air-furnaces. From my own What have been the results of the expe-| ful observations on heating by steam, are observation, and from the verbal reports of riments upon water wheels, made under the contained in a work, lately received by us, many who have used them, and from all direction of the Franklia Institute, at Phil- and from which we shall extract much in-lihat I have read on the subject, it appears adelphia ? What kind of wheel was foundteresting matter on this and other subjects. || chat the first class of contrivances are not best adapted to, or inost effective under any as soon as we can dispose of the matter al. liable to injure the air, as the others do, by given head and fall ? ready on our hands.
giving it the power of causing headache,