US10073A - Cab-wheel - Google Patents
Cab-wheel Download PDFInfo
- Publication number
- US10073A US10073A US10073DA US10073A US 10073 A US10073 A US 10073A US 10073D A US10073D A US 10073DA US 10073 A US10073 A US 10073A
- Authority
- US
- United States
- Prior art keywords
- wheel
- hub
- rim
- brace
- cab
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910001018 Cast iron Inorganic materials 0.000 description 6
- 238000009423 ventilation Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000003137 locomotive Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000005712 crystallization Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000011796 hollow space material Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B17/00—Wheels characterised by rail-engaging elements
- B60B17/0006—Construction of wheel bodies, e.g. disc wheels
- B60B17/002—Construction of wheel bodies, e.g. disc wheels with counter-balance
Definitions
- the disk wheels on the other hand are not free from radical defects.
- Another difficulty attending the disk wheels arises from the practical impossibility of perfectly centering the cores, and the consequent inequality of thickness of the plates, so that they have to be run very heavy, amounting to several thousand pounds superfluous weight in a single train.
- Figure l is a. front view and Fig. 2 a transverse section.
- (A) is the hub, and (B) the rim of a railroad car-wheel.
- the web or connecting portion of the wheel radiates from the hub in the form of a number of spokes or plates (C) whose depth or dimension parallel with the axis, is the full length of the hub,-or nearly so,-so as to give abundant lateral stiffness to the wheel.
- each plate projects nearly at right-angles from the hub surface, whence diverging alternately to the front and back of the wheel in an easy curve, it becomes rapidly thinner in the direction parallel with the axle, and thicker in the plane of the wheel; until a little before it reaches the rim it has expanded into a plate, (D) which joining with that of the next alternate spoke on each side, becomes one of a pair of continuous flanges (E)-one at each verge of the concavity of the wheel, thus forming two fianges, and presenting the main substance in the direction of revolution, -which is where the strengthis here wanted.
- the wheel although at first sight it might seem otherwise is very easily molded, the hollow space (b) between the flanges, being formed by a single dry core in the shape of a ring, which is readily supported without the necessity for anchoring, and the uncertainty attending the molding of the disk Wheels; and this annular core is-with eX- ception of the usual one for the axle-the only one required. There is also abundant ventilation for the core.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Description
Z; H. MANN;
Car Whee.v
Patented 0m. 4, 1853.
y ITED 'STATES PATENTl OFFICE.
ZADOK H. MANN, OF NEWPORT, KENTUCKY.
CAR-WHEEL.
Specicaton of Letters Patent No. 10,073, dated October 4, 1853.
To all whom t may concern Be it known that I, ZADoK H. MANN, of Newport, Campbell county, Kentucky, have invented a new and Improved Construct-ion for Cast-Iron Car and Locomotive vWheels; and I hereby declare the following to be a full, clear, and exact description thereof, reference being had to the annexed drawings, making part of this specification.
My aim in these improvements, is the construction of a cast iron car wheel that shall combine and embody as much as possible the following advantages. An equal rate of cooling and contraction in all parts, by a judicious distribution and ventilation of the metal. Sufficient provision for unequal shrinkage or strain. Adequate continuous support of the rim. Transverse or lateral stability elfected by width of bearing of the connecting portion on the hub and by the brace and counter brace character of the said portion. Avoidance of liability to separate, either athwart the hub, or between the latter and the connecting portion, or across the rim, or in other parts now subject to fracture. The attainment of the requisite strength with the least possible weight of metal.
The numerous plans for wheels brought forward during the last five years, appear as far as known to me to be deficient in one or more of the above cited desiderata. All of these plans may be ranged mainly under one of two heads,--namely,-those in which the hub and rim are connected by spokes or those in which they are connected by plates; and some combine to some extent the advantages of both systems but none that I know of unites so fully as the plan proposed byme all the desiderata above recited; especially those of brace and counter-brace, continuous support of the rim and lateral stability together with adequate provision for the strain arising from shrinkage. The spoke wheels generally, are very subject to transverse fracture of the rim, and also to the severance of the latter from the spokes near the place of junction.
The disk wheels on the other hand, although at present extensively adopted are not free from radical defects. The want of an adequate lateral brace and the divergent action of the disk in setting, tend to strain the two ends of the hub apart, .and cause it frequently to fracture at right-angles to the axis, during the process of boring, or, after- Ward when in use. Another difficulty attending the disk wheels, arises from the practical impossibility of perfectly centering the cores, and the consequent inequality of thickness of the plates, so that they have to be run very heavy, amounting to several thousand pounds superfluous weight in a single train.
Another practical objection in casting the disk wheels arises from the difficulty of providing a suflicient vent for any mo-isture remaining in or about the core, and as a consequence, a more or less porous formation of the disks, making them treacherous objects of dependence. They are also liable from the much longer retention of heat about the center, than at the outside, to be undergoing contraction at the center, while the parts toward the outside are expanding by crystallization; and the consequence is, a weakness and liability to part either by a radial fracture across the hub, or by a concentric crack in the plate, near the hub; and I will here observe, that there is with my wheel, not only a very uniform ventilation of the casting, but the slight necessary moistening of the sand which forms the interstices of the plates at the hub, occasions a beneficial cooling of the central portion.
It is my aim in the present improvement to combine the advantages of both classes of wheels, and to avoid their defects.
In the accompanying drawings, Figure l is a. front view and Fig. 2 a transverse section.
(A) is the hub, and (B) the rim of a railroad car-wheel. The web or connecting portion of the wheel radiates from the hub in the form of a number of spokes or plates (C) whose depth or dimension parallel with the axis, is the full length of the hub,-or nearly so,-so as to give abundant lateral stiffness to the wheel. From the hub, each plate projects nearly at right-angles from the hub surface, whence diverging alternately to the front and back of the wheel in an easy curve, it becomes rapidly thinner in the direction parallel with the axle, and thicker in the plane of the wheel; until a little before it reaches the rim it has expanded into a plate, (D) which joining with that of the next alternate spoke on each side, becomes one of a pair of continuous flanges (E)-one at each verge of the concavity of the wheel, thus forming two fianges, and presenting the main substance in the direction of revolution, -which is where the strengthis here wanted.
The curved form given to the'web as represented, enables the parts to accomm date themselves to any unequal shrinkage without the danger of fracture, while at the same time the peculiar form of the web,
operates both as a brace and counterbrace as is evident on inspection of the sectional View, Where the dotted lines '(a.) indicate the directa-nd oblique strains which are thus guarded against. The form of the curve is also such as to present the connecting plates vertically-or nearly so-'both to the hub and. to the rim, which is the form best adapted tol communicate' the strain direct to the plate. i
The wheel although at first sight it might seem otherwise is very easily molded, the hollow space (b) between the flanges, being formed by a single dry core in the shape of a ring, which is readily supported without the necessity for anchoring, and the uncertainty attending the molding of the disk Wheels; and this annular core is-with eX- ception of the usual one for the axle-the only one required. There is also abundant ventilation for the core.
fracture would have either to pass through Itshould also be observed that the openings (G) in one flange, come opposite the solid portions in the other one, so that any the wide part of one of the flanges, or to run obliquely across the tread of the wheel. I claim as my invention, and desire to `secure by Letters Patentn The construction-as described-of a cast-iron rail road car and locomotive wheel; whose web or portion connecting the hub and rim,"consists at the hub, of broad radiating plates in the plane of the aXis, whence turning alternately to the right and to the left, they contract in the direction parallel with the aXis, and expand proportionally `in the direction of revolution; those of each alternate set uniting as they approach their respective margins of the rim-concave, so as to form flanges having openings left for each intermediate plate on the other side, forming a braced and counter-braced wheel possessing the requisite lateral stability and continued support at the rim, together with adequate provision for the strain arising from shrinkage &c. and this I claim, whether the said web be formed ina cyma reversa curve as described-0r in any way substantially equivalent.
In testimony whereof, I have hereunto set my hand before two subscribing witnesses.
Z. H. MANN.
Witnesses:
GEO. H. IhNIGHT, F. H. GETZENDONNER.
Publications (1)
Publication Number | Publication Date |
---|---|
US10073A true US10073A (en) | 1853-10-04 |
Family
ID=2070394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10073D Expired - Lifetime US10073A (en) | Cab-wheel |
Country Status (1)
Country | Link |
---|---|
US (1) | US10073A (en) |
-
0
- US US10073D patent/US10073A/en not_active Expired - Lifetime
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4447A (en) | Car- wheel | |
US6026A (en) | Cast-iron car-wheel | |
US6022A (en) | Cast-iron oak-wheel | |
US5932A (en) | brown | |
US10073A (en) | Cab-wheel | |
US5126A (en) | Cast-iron cab-wheel | |
US1468085A (en) | Metal wheel | |
US6269A (en) | Cast-iron car-wheel | |
US7170A (en) | Cast-iron | |
US15935A (en) | Cast-iron kailroad-cab | |
US7169A (en) | Cast-ibobt cae-wheel | |
US8777A (en) | Cast-iron cab-wheel | |
US7903A (en) | Cast-iron car-wheels | |
US11124A (en) | Cast-iron car-wheel | |
US6971A (en) | Cajbhi hart | |
US8772A (en) | Cast-ie | |
US7658A (en) | Cast-ibon bailboad cab-wheels | |
US549858A (en) | Car-wheel | |
US8985A (en) | Cast-iboh car-wheel | |
US46145A (en) | Improvement in car-wheels | |
US7282A (en) | Cast-iron oak-wheel | |
US7676A (en) | Wrought-ibobt oak-wheel | |
US514502A (en) | schmidt | |
US132091A (en) | Improvement in hubs for vehicle-wheels | |
US11056A (en) | Cast-iron car-wheel |