US762611A - Swing-bolster for railway-car trucks. - Google Patents

Description

PATENTED JUNE 14, 1904.

S. A. BEMIS. SWING BOLSTER FOR RAILWAY CAR TRUCKS.

APPLIOATION FILED OUT. 5, 1903.

N0 MODEL.

3 SHEETS-8EEET 1.

PATENTED JUNE 14, 1904.

s. A. BEMIS. y SWING BOLSTER FOR RAILWAY GAR TRUCKS.

APPLICATION FILED OCT- 5. 1903.

3 SHEETS-SHEET 2.

N0 MODEL.

m: Noam *JEFERS o0. Puoraumu, WAEHXNGYON. n. c.

No. 762,611. PATENTED JUNE 14, 1904.

SLA. BBMIS. SWING BOLSTBR FOR RAILWAY GAR TRUCKS.

APPLICATION FILED OCT. 5, 1903.

N0 MODEL. 3 SHEETS-SHEET 8.

Patented June 14, 1904.

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

Tl'ON OF NEW JERSEY.

N. Y., CORPORA- SWlNG-BOLSTER FOR RAILWAY-CAR TRUCKS.

SPECIFICATION forming part of Letters Patent No. 762,611, dated. June 14:, 1904.

Application filed October 5, 1903.

To all whom it may concern.-

Be it known that I, SUMNER A. Burns, 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 Swing- Bolsters for Railway-Car Trucks, of which the followingis a-full, clear, and exact description.

This invention relates to improvements in railway-car trucks, more particularly those for electric street-railway cars; and the invention particularly pertains to the construction and mounting transversely at the central upper portion of the truck of what is termed the swingbolste1"-that is, the bolster on which the car-body has its direct support and on which it may by reason of thecapabilities of the swing-bolster have a slight degree of transversal movement in unison with the swing-bolster and also have an up-and-down cushioned movement.

The invention consists in the means whereby the swing-bolster is carried spring-supported from what is termed the transom-bolster, which is a part of the truck-frame structurein the form of an bpen transverse girder extending between and supported by the side frames of the truck.

The invention furthermore consists in means whereby the swing-bolster is susceptible of a desirable though slight degree of movement against spring resistance between its ends and suitable members of the transom-bolster in a direction longitudinal relatively to its own length, which is transversely of the truck as a whole; and the invention may be otherwise said to consist in constructions and combinations of parts, all substantially as hereinafter pointed out in connection with the accompanying drawings and set forth in the claims.

In the drawings, Figure 1 is a plan view of a truck embodying various improvements, and particularly those comprising the novelties pertaining to the swing-bolster. Fig. 2 is a side elevation of the truck. Fig. 3 is a vertical cross-section of the truck on the plane indicated by the line 3 3, being centrally through Serial No. 175,889. (No model.)

the entire length of the swing-bolster and showing the supporting and end cushioning means therefor. Fig. 4 is a partial vertical sectional view as taken on the line 4 t, Fig. 3. Fig. 5 is a perspective view of the swingbolstcr. Figs. 6 and 7 are views of the upper and lower carrying-blocks therefor. Fig. 8. is a perspective view of an end portion of the swing-bolster as seen from the under side thereof. Fig. 9 is a perspective view of an end portion of one of the duplicated members of the transom-bolster. Fig. 10 is a perspective view of one of tl1eblock-like members provided at each end of the transom-bolsters. Fig. 11 is a plan view at one end portion of the'transom-bolster, showing the arrangement relatively thereto in horizontal section of an end portion of the swing-bolster, Fig. 12 being a horizontal sectional view through the same parts, these "iews showing a construction modified in detail from the construction for the corresponding purposeillustrated particularly in Fig. 3. Y Similar characters of reference indicate corresponding parts in all of the views.

1N ith reference to the drawings and referring to the truck generally, A A represent the journal-boxes supported in the usual manner on the ends of the car-wheel axles B, the forward and rear boxes at each side of the truck supporting the equalizing-bars C and the side frames D, which are of hollow construction and accommodate therewithin such equalizingbars, the side frames being by the springs a supported above the tops of the journal-boxes, such side frames D D sustaining all of the parts pertaining to the truck-frame, while the equalizing-bars sustain, through the medium of the elliptic springs b 6 the transom-bolster E, the same having only an up-and -down movement on its springs and in turn sustaining the swing-bolster Gr, which is peculiarly supported on spiral springs suspended from the transom-bolster and has in addition to its cushioned up-and-down movement a proper degree of endwise spring-resisted movement crosswise of the truck.

The transom bolster and swing bolster mounted thereon support the car and the load, a portion of the car-body being indicated at X in Fig. 3, having the depending circular casting m, fitted to swivel in the annularlyflanged wear-plate e, bolted at the top of the swing-bolster.

A car-truck as a whole is organized substantially as hereinabove briefly stated, wherein separate and independent sets of side members are provided, those termed the equalizing-bars supporting, through the transom and swing bolsters, the car and its load, while the other pair of side frames sustain the weight of all that more particularly pertains to the truck-frame, brake, and other equipments and which side frames serve as restraining means for the up-and-down movements of the transom-bolster, and swing-bolster saddled therein constitutes the subject-matter of an application for Letters Patent of the United States filed by me under date of October 31, 1903, Serial No. 179,316, and now, confining the further description to the novel features and arrangements directly pertaining to the swingbolster, it will be perceived that this part (7i is constructed in the form of a substantial castiron beam cored out from beneath for the avoidance of undue weight and properly reinforced with webs and flanges. This bolster has end walls f and is provided in both of its ends with perforations r 9 through its top wall, the portions of the bolster at which these perforations are provided being overlaid by the carrier-block H, the dimension of which fore and aft of the truck being greater than the width of the swing-bolster, so as to receive support at the notched portions it h thereof on the opposite parallel and separated members 10 10 of the transom-bolster E, the said members 1O 10 having the upstanding edge lugs 12 12, as seen in Fig. 9, which serve asabutments for shifting or displacement of the upper carrierblock H relatively to the length of the transombolster, and of course it will be plain that the carrier block may prevent shifting or displacement movement transversely of the length of the transom-bolster by reason of the margins of the under notches it it engaging the upper edges of the transom-bolster members 10. The upper carrier-block has perforations 15, in arrangement matching with those 7 r of the swing-bolster; and it has horizontal channels 16 16 from side to side thereof in lines intersecting the perforations 15, in which channels round horizontal bars 7 rest, the intermediate portions of which penetrate and are encircled by the ring-formed upper ends of vertical bars 7, which depend down through the perforations in the upper carrierblock and in the swing-bolster and have at their ring-formed lower ends horizontal bars 21 similar to the upper ones 7? and which sustain the lower carrier-block I, the same having underneath grooves 17 17 for engagement over the horizontal bars 1' having the perforations 18 18 for the accommodation of the vertical bars] and are provided with upstanding cheeks 2O 20, which constitute guide members by their sidewise engagements with the depending webs f f of the swing-bolster.

The comparatively massive spiral springs K rest on the lower carrier-block and sustain the swing-bolster for a vertical cushioned movement relatively to the transom-bolster E, by which the carrier-blocks and supportingsprings are primarily sustained.

Springs J are interposed between the ends of the swing-bolster and the hollow block members at the ends of the transom-bolster, these springs, as shown in Fig; 3, being spiral springs encircling tubular hub-like fittings 32, projecting longitudinally from the ends of the swing-bolster and setting into depression-seats 33 in the inner ends of the blocks 30, and bolts 34 are extended horizontally through the transom-bolster part 30 centrally within the springs andinto the part 32, said bolts receiving nuts 35 at their outer ends, screwed up against the ends of the part 30.

In Figs. 11 and 12 a preferred mode of application of the end cushioning-springs J for the swing bolster is illustrated. block 30 of the transom-bolster is provided with a horizontal bore therethrough in the central longitudinal line of the swing-bolster. A vertical aperture 42 is provided intermediately of the block to intersect the bore 40, in which is received a removable cast-iron plate or block 43, having a tapped hole therethrough at its lower extremity, which is across the bore 40. In the inner portion of the bore 40 is a headed. plug 44, the head of which is borne against by a screw 45, which screw engages through the plate 43, the outer end portion of this screw next within its head having rotative bearing in an annular bushing 46, fitted in the outer orifice of the bore 40. The spring J at one end portion thereof encircles the shank of the screw-plug 44 and has an abutment against the flange-head of such plug or against a washer 47 next thereto, while the opposite end of the spring is in bearing against the end of the swing-bolster. The spring J of about the right length is put in place, as shown, and placed under the required normal compression by setting up the screw 45. After awhile when it may be desired to further take up the spring the screw is removed, the plate 43 is also lifted from its socket, the plug 44 is withdrawn, and one or more washers, such as 47, placed on the shank of the plug next to the head, and the parts are replaced and set up by turning the screw 45 inwardly until its head is brought to bind against the outer face of the bushing 46.

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

1. In a car-truck, the combination with a transverse support comprising opposite side The end 7 tion thereof supported by said springs.

2. In a car-truck, the combination with a transverse support comprising opposite side members having saddle-blocks supported upon the end portions thereof, and having portions constituting end walls for said support, of depending bars supported for swinging movements relatively to the saddle-blocks and sustaining lower carrier-blocks having bolstersprings, a swing-bolster located between the separated members of said transverse support resting on the bolster-springs, and springs between the end walls of the transverse support and the ends of the swing-bolster.

3. In a car-truck, the combination with a horizontal transverse support comprising separated members, and saddle-blocks supported at the upper edges of the end portions of said transverse support and extending across from one to the other of its separated members, and each having a vertical perforation through it, a vertical bar sustained for a rocking support on each carrier-block, and depending through the perforation therein and supporting, by its lower portion, a lower carrier-block, springs sustained by. and extending above, the lower carrier blocks, and the swing-bolster located between the separated members of said transverse support and resting on said springs.

4. In a car-truck, the combination with a horizontal transverse support comprising separated members, and saddle-blocks supported at the upper edges of the end portions of said transverse support and extending across from one to the other of its separated members, and each having a vertical hole therethrough and a horizontal channel 16 intersecting the hole, of a vertical bar depending through the hole in each saddle-block and having a horizontal cross-bar at its upper end lying in said channel 16, and lower carrier-blocks sustained by the depending bars below the saddle-blocks and having bolster-springs supported thereby and the swing-bolster resting on said springs.

5. In a car-truck, the combination with a horizontal transverse support comprising separated members and saddle-blocks supported at the upper edges of the end portions of said transverse support, and extending across from one to the other of its separated members and each having a vertical hole therethrough and a horizontal channel intersecting the hole, a vertical bar depending through the hole in each saddle block and having a horizontal cross-bar at its upper'end lying in said channel and having a horizontal bar at its lower end, of lower carrier-blocks having vertical holes therethrough and supported on the lower horizontal members of said depending bar, bolster-springs mounted on said lower carrying-blocks and the swing-bolster resting on said springs.

6. In a car-truck, the combination with a horizontal transverse snpportcomprising separated members and having saddle-blocks supported at the upper edges of the end portion of the members of said transverse support, and extending across from one to the other thereof, and provided with suspension-bars which, at their upper ends, are sustained by the saddleblock and have swinging movement transversely of the truck, of lower carrying-blocks sustained by said depending bars and having upstanding members 20 20, springs mounted on the lower carryingeblocks and the swingbolster resting on said springs and having depending members f and f with which said carrying members 20 have guiding engagements.

7. In a car truck, the combination with transverse horizontal transom bolster comprising separated parallel side members 10 10, having near the end portions thereof the upstanding abutment-lugs 12 12, of saddle-blocks resting on, and extending between, the transom-bolster members and. edgewise engaged between said lugs 12 12 and having the vertical holes 15 15 and the horizontal channel 16 16 in lines intersecting said holes, the vertical bars 7 7 having upper cross members a which rest in said channels for rocking movements therein, and having at their lower ends the transverse members 41*, the lower carrierblocks having the vertical holes therein through which said vertical bars pass and having supports on the said members 2 spiral springs supported on the lower carrier-block and encircling intermediate portions ofv said bars and the swing-bolster located within the transom bolster and supported by said spiral springs.

8. In a car-truck, the combination with the transom-bolster comprising the separated horizontal transverse members 10 10, of saddleblocks having the under grooves It I in parallelism corresponding to the separation of the transom-bolster members and engaging at said grooved portions over the upper edges of said members, and said saddle-block having engaged therewith, and depending therebelow.

for swinging movements transversely of the truck, the bars jj, the lower carrier-blocks sustained by said depending swinging bars, spiral springs mounted on the latter and the swing-bolster resting on said springs and located between the members of the transombolster.

9. For a railway-car truck a saddle-block having parallel bottom grooves it h relatively to the transverse line of the truck having the vertical holes therethrough and having within its top the horizontal channels 16 16 in lines relatively from front to rear of the truck and intersecting said vertical holes, substantially as shown.

10. For a car-truck of the character indicated, a lower carrier-block having' vertical holes 18 18 therethrough, horizontal notches or channels in its bottom, in lines intersecting said holes and having upstanding opposite cheeks 2O 20, substantially as shown.

11. For a car-truck of the character indicated, a swing-bolster comprising opposite depending side members, and having depending end members f and the depending members f inwardly removed from the end members f, the vertical faces of said members 7" andf constituting lower carrier-block guides, substantially as set forth. v

12. In a railway-car truck, the combination with a transom-bolster comprising separated horizontal transverse members having at each end a uniting and intermediately disposed member provided with a horizontal bore therethrough in the line of the length of said bolster and having intermediately of said uniting member a vertical socket intersecting the horizontal bore, of a removable plate in the vertical socket having a threaded hole therethrough, a screw entering the outer end of the bore threading through and beyond said plate, a plug located in the inner portion of said bore, a spring surrounding the plug and inwardly extending beyond the inner face of said uniting member, and a swing-bolster endwise bearing against the springs.

13. 1n a railway-car truck, the combination with the transom-bolster comprising the separated parallel transverse side members and a uniting end block 30 having the horizontal bore therethrough and having a vertical socket intersecting said bore, of the removable plate 43 fitting in said socket and having a threaded hole therethrough axially coincident with said bore, a bushing fitted in the outer orifice of the bore, a headed screw, the shank of which threads through the threaded hole in said plate and the head of which may be brought to bearing against the outer end of the annular bushing, a headed plug 44 located in the inner portion of the bore, headwise against the adjacent end of the screw, a spiral spring surrounding the shank of the plug, endwise resting against the head of the plug and inwardly extending beyond the inner face of the uniting-block 30, and the swingbolster spring-sustained by and located within the transom-bolster and capable of a movement relatively to the length of itself and of the transom-bolster and in endwise bearing against said spiral spring, substantially as described.

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.

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