US761650A

US761650A - Transom-bolster for railway-car trucks.

Info

Publication number: US761650A
Application number: US17589003A
Authority: US
Inventors: Sumner A Bemis
Original assignee: Bemis Car Truck Co
Current assignee: Bemis Car Truck Co
Priority date: 1903-10-05
Filing date: 1903-10-05
Publication date: 1904-06-07
Anticipated expiration: 1921-06-07

Description

PATENTED JUNE-7, 1904. 3

I No. 761,650.

's. A. BEMIS. v TRANSOM BOLSTER FOR RAILWAY GAR TRUCKS.

APPLICATION FILED 0012 6, 19 03.

mums-511mm N0 MODEL.

PEYERS co. wuoro-Ln na, msu mm PATBNTED JUNE 7, 1904;

s. A. BEMIS, TRANSOM BOLSTER FOR RAILWAY GAR TRUCKS.

APPLIOATION FILED 0015, 1903.

HO MODEL;

Patented June 7, 1904:.

SUMNER A. BEMIS, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO BEMIS CAR TRUCK COMPANY, OF NEW OF NEW JERSEY.

YORK, N. Y., A CORPORATION TRANSOM-BOLSTER 'FOR RAI LWAY-CAR TRUCKS- SPECIFICATION forming part of Letters Patent N0. 761,650, dated June 7, 1904.

Application filed October 5, 1903.

1'0 all whmw it may concern:

Be it known that I, SU NER A. BEMIS, a citizen of the United States of America, and a resident of Springfield, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Transom -Bolsters for Railway -Car Trucks, of which the following is a full, clear, and exact description.

This invention relates to improvements in railway-car trucks, more particularly to trucks for street-railways; and the invention especially pertains to the construction of and equip- 5 body of the car is or may be mediately or di rectly supported. I

The object of the invention is to improve the construction of the transom-bolster and the manner of combining the same with the side frames of the car-truck relatively to which it has, by reason of its being spring-supported, up and down movements, whereby the thrust of the bolster in a direction fore and aft of the carthat is, transversely of its own length will be well resisted and whereby while the bolster at the end portions thereof is required to have suitably free up and down movements relatively to the side frames in which the bolsteris guided excessive looseness between the 3 extremities of the bolster and adjacent members of the side frame may be provided against and compensated for.

The invention consists in the constructions and arrangements or combinations of parts,

all substantially as hereinafter described, and

7 set forth in the claims.

The novel constructions and arrangements are illustrated in the accompanying drawings, in which- Figure 1 is a plan view. of intermediate portions of the'side frames of the truck and the transom-bolster combined and engaged therewith. Fig. 2 is substantially a side view of the transom-bolster. Fig. 3 is a perspective view of the uniting block or member understood as provided at each end of the bolster.

Fig. 4 is a side elevation of a slight interme- Serial No. 175,890. (No model.) 4

diate part ofthe side frame of the truck and end View of the bolster. Fig. 5 is a view, on a larger scale and more in detail, of an intermediate portion of the side frame of the truck and end elevationofthe transom-bolster, certain ofthe parts being in vertical section. Fig. 6 is a plan view of Fig. 5. Fig. 7 is a horizontalsectional View of a portion of the constructions-f own in Fig. 5 as taken on the line 7 7. Fig. 8 is a perspective View of an inclined take-up block shown in Figs. 5 and 7. Fig. 9 is a perspective view of the parts shown in Figs. 5 and 7. ments for the transom-bolster, by which the Similar characters of reference indicate corresponding parts in all of the views. I

In the drawings, A represents the transom bolster, and B a portion of one of the side frames, of the railway-truck, the same being understood as sustained primarily'from the axle-supported journal-boxes, and this side frame has at its middle portion, which is the middle portion of the truck, the separated upstanding members a a.

For the attainment of sufficient strength and stability of the side frames B the same are constructed with parallel side bars 10 10, suitably united, uniting members 12 12 being shown as provided within and secured by bolts to the aforementionedupstanding side members a a, said uniting parts 12having vertical faces 13, which directly constitute the guiding-surfaces for the extremity of the transombolster, which is adjacent thereto.

The transom-bolster, as particularly shown in Figs. 1 and 2, is in the form of a substantial cross-beam composed of separated parallel side members 6 Z) and intermediate uniting'end blocks d d, which by the bolts 0 0 firmly confine the parts as one, and the bolsterhas at its opposite sides quite near its ends the outwardly-extending projections a 0, which are engaged between the separated extremities 10 10 of the side-frame members, which project inwardly toward the space between the upstanding members a (0 beyond the inner faces of the side frame blocks or members 12.

Inasmuch as the transom-bolster issup.-

ported on elliptic springs (J, the upper screwthreaded extremities of clips or spring-holders at the ends of the bolster have within and next to the inner faces 13 of the upstanding members of the side frames are considerable in practice, being nearly or quite as great as the vertical dimension of the bolster, whereby any impact which the bolster may have at the time of starting or stopping the truck rela tively to the truck-frame is ably resisted and in a manner to prevent anytendeney of a rocking or rolling motion of the transom-bolster about an axis coincident with its central longitudinal line, and all movement of the transom-bolster in the line of its own length, which is transversely of the truck, is rcsistedby the engagement of the projection 6 against the truck side frame members 10 10, within which the members 0 are located.

As shown in Sheet 2 of the drawings, one of the bolster end members a is constructed hollow that is, it has a chamber 9 between its opposite'sides or cheeks 16 16.and below its top wall 17 and it has within such chamber'theinclined wall 7L, and there is provided in the chamber an adjustable block y', the inner face of which is inclined, as shown at 18, while its outer face 19 is vertical, and this block has back of its vertical face 19 a vertical screw-tapped hole 20, in which engages a screw-shaft m, which projects through a slot 22 in the top wall 17 of the projection e, having the squared or other suitable head by means of which it may be turned.

The spring 12/ is shown encircling theserewshaft, its upper end being in bearing against the under side of the top wall 17, while its lower end reacts downwardly against the block 1'.

For lightness and'for the accommodation of the spring the block 7' is cored out, as indicated at 23, back of the vertical face, the lug or cross-Web 2 1, however, in which to provide the screw-tapped hole 20 and to constitute for the spring, being left as a rear intermediate extension of the front wall of the block. Also the inelinedface it within the projection e is intermediately and vertically cored out, as indicated in Fig. 7, for the avoidance of unnecessary Weight.

By turning the screw m the movable, block in substance widens or narrows the dimension of the double-winged transom-bolster, which has engagement within what is practically opposite vertical grooves in the aforementioned upstanding members a a of the truck side frame.

Upon the turning of the screw in one-direction to change the position of the wedgeshaped block endwise movement of the screw is resisted by the engagement of its head with the top wall 17 of the part v, while upon the turning of the screw in the other direction to correspondingly reverse the movement to the wedge-shaped block, the spiral spring, which is understood as being under a sufficient degree of compression, overcomes any tendency for endwise movement of the screw.

The turning of the screw in either direction, occasioning endwise motion of the inclinebacked block bodily in the direction of the length of the screw, occasions also a bodily transverse shifting movement to withdraw the block inwardly relatively to the projection 0 or distend it outwardly therefrom to compensate for wear, the transverse movement of the block carrying bodily as one with it the screw, thehorizontal movementof which is permitted by the elongation of the slot 22.

In Figs. 1 to 4 the parts constituting the wings or projections (1 of the transom-l)olster are indicated as integrally cast on the long bolster-bars f) 7), while in the drawings of the second sheet these parts are indicated as extensions of channeled plates or blocks X, which are fitted and bolted to the bolster-bars, the confinement being made by the same bolts which unite the bolster-bars and the end blocks fl.

Having thus described my invention, what I claim, and desire to secure by Letters ,latent, is

1. In a railway-car truclt, the combination with a side frame having separated upstanding and upwardly-opening members (1 u, of a. spring-supported transom-bolster, having end portions thereof located between and in guiding engagement with the facing inner surfaces of said upstanding members, and there being provided relatively to one of the engagementfaces an adjustably-moval)le take-up member for wear, and means for confining said member immovably in its adjusted position.

2. In a railway-car truck, the combination with a side frame having at the middle portion thereof the separated upstanding and upwardly-opening members a a, of a springsupported transom-bolster having end portions thereof located between and in guiding engagement with the facing inner surfaces of said upstanding members, one of said interengaging parts being constructed with a recess having an inclined face and having provided therein a block having an inclined inner face and a vertical outer face, and a screw in engagement with the wall of the recessed part and screw-engaging said inclined-faced block for the purpose set forth.

3. In a railway-car truck, the combination with a side frame having at the middle portion thereof the separated u istanding and upwardly-opening members a u, of the springsupported transom-bolster having the end portions thereof located between and in guiding engagements with the inner facing surfaces of said upstanding side-frame members, one

of said interengaging parts being constructed with a recess having an inclined inner face and a perforated top' wall and having provided therein a block having an inclined inner face, a vertical outer face, a screw-tapped portion 24 and a spring-accommodating recess 23, a headed screw, the shank of which extends downwardly through said perforated top wall to a screw engagement with said portion 2 1 and a spiral spring in compression between the aforementioned top wall and said member 24 for the purposes set forth.

4;. In a railway-car truck, the combination with the side frames each having at the middle portion thereof, separated upstanding and upwardly-opening members a at having vertical upwardly-opening channels within their facing inner surfaces, of the spring-supported transom-bolster having end portions thereof located between and in guiding engagement with the facing inner surfaces of said upstanding side frame members, and having the V transverse wings or projections e e engaging in the aforementioned vertical channels whereby longitudinal movements of the transombolster transversely of the truck are resisted.

5. In a railway-car truck, the combination with the side frame having at the middle portion thereof separated upstanding and upwardly-opening members a a, of the transombolster consisting of separated side bars 6 6 and intermediate uniting end members d having spring-bolts engaging upwardly therethrough and having confining-nuts at the top of said uniting member and a transom-bolster supporting elliptic spring having the intermediate portion thereof secured beneath the end of the bolster through the medium of said bolts.

6. In a railway-car truck, the combination with a side frame consisting of separated paired bars 10 10, the middle portions of which are of U form, and have back from the inner vertical facing edges of the upstanding and upwardly-opening members thereof, the spacing-blocks 12 12, and the transverse unitingbolts, of a spring supported transom-bolster having its end portion engaging in the U- shaped side frame and having opposite wings extending longitudinally of the truck, engaging between the inwardly-opening inner'and outer side members of the side frame, substantially as described and shown.

7. In a railway-car truck, the combination with a side frame having separated upstandin its U-shaped middle portion, the inner facing boundaries of which are vertically channeled, of the transom-bolster having the end portion thereof located in the aperture in the U-shaped side frame and having the transverse projections ec engaging in said vertical side-frame channels, and one of said projections having a chamber therein with the inclined wall It and the top wall 17 having the elongated perforation 22, the block j having a vertical outer face 19 and an inclined inner face 18 and the screw m extending through said elongated perforation and screw-engaging and actuating said block substantially as described.

8. In a railway-car truck, the combination with a side frame having separated upstanding and upwardly-opening members comprised in its U-shaped middle portion, the inner facing boundaries of which are vertically chanhole 20, an inclined inner face -18, the screw m extended through said elongated perforation and screw-engaging and having its shank disposed 1n sald recess 28 and screw-engaging in said threaded hole 20, and the spring a 1n said recess 23 encircling the screw and in compression between said wall 17 and member 24:,

substantially as described and shown.

Signed by me at Springfield, Massachusetts,-

in presence of two subscribing witnesses, this 25th day of September, 1903.

SUMNER A. BEMIS.

Witnesses:

A. V. LEAHY, .WM. S. BELLOWS.

5 5 ing and upwardly-opening members comprised