USRE13165E - John e - Google Patents

Description

J. E. WEBSTER.

RE$ILIENT CONNECTION.

APPLICATION FILED JUNE 25, 1910.-

Reissued Nbv. 8,1910.

wimEssii mbRNEY J. E. WEB$TER. RESILIBNT CONNECTION.

APPLICATION FILED JUNE 25, 1910.

Reissued Nov. 8, 1910.

Fig. 2.

WITNESSES Q 6 44.63% QM a.

outrun snares PATEN JOHN E. "WEBSTER, F PITTSBURG; PENNSYLVANIA, ASSIGNOR, BYlVfESNE ASSIGN- MEETS, TO VF'ESTINGHOUSE ELECTRIC (it MANUFACTURING CUMPANY, OF EAST IITTSBURG, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

EESILIENT GQNNEGTION.

Specification of Reissuecl Letters Patent. Roigsfigrjl, N9 8 1910,

Original No. 937,346, dated October 19, 1909, Serial No. 426,344. Application for reissue filer; June 25,

. 1910. Serial No. 568,949.

To all whom it may concern:

Be it known that LJOIIN E. Nunsrnn, a citizen of the United States, and a resident of Pittsburg, in the county of Allegheny and State of Pel'insylvania, have invented a new and useful Improvement in Resilient Connections, of which the following is a specification.

lily invention relates to means for resiliently and ruieratively connecting two members, such, for instance, as the driving wheels of electric railway vehicles and the rotatable members of the propelling motors thereof.

The object oi my invention is to providea resilient connection of the character indicated that shall possess great flexibility and be capable of sustaining large deflections in any direction and, at the same time. be ex:-

ceptionally strong and durable.

The invention illustrated in the accompanying drawings, Figure 1 of which is a view in end elevation and in section oi a portion of a wheel and the driving mechanism of a vehicle. Fig. 2 is a view in sidc'clovation and in section on line H--H of Fig. 1, and. Fig. 3 is also a. view in side elevation and in section on line lit-Ill. of Fig. 1.

An axleLupon which is mounted a driving wheel 2 having a plurality of spokes 3, is surrounded by a quill d that carries the rotatable member Frof a propelling motor 6 for the vehicle, the quill 4 being provided with an end flange 7 to which are secured, by means of bolts 8, arms 9 that extend outi- Wardly between the spokes 3 of the driving wheel. Interposed between the spokes of the driving wheel, and secured intermediate their ends to the extremities of the arm 9, are a plurality of concentric helical sprii'ig's l0 and 11, the outer spring 10 being of greater length than the spring 11 and being; secured. at ends, to the spokes The means for securing the springs to the arni 9 comprises a split ring 12 formed integral with the arm 9 at its extremity and screwthreaded upon its inner circumferential face I for the reception of the spring 10, a bolt 13 being provided for clamping the ring 12 upon the spring 10. V/ ithin the ring 12 and also within the spring 10 is another ring let that is screwthrcaded upon its outer cirenn1- ferential surface to permit its screwed into the spring 10 and also upon its inner circuinferential surface to permit of its being screwed upon the spring;- 11. With in the ring it and also within the spring 11 is :1 screw-threeded split ring into which is threaded. a taper plug 16 for expanding the same and clamping the spring 11 between the rings 14: and lo the en s of the members 15 and 16 being somewhat extended tor the purpose of limiting; the lateral deflections to which the spring-11 may he subjected by com trit'ugal forces.

The means for securing the ends of the spring 10 to the driving wheel comprises rings 18 that are bolted to lugs 20 formed integral with the spokes 3, and are screwthreaded upon their, inner circumferential. faces to permit of their being screwed upon the ends of the helical sp ing it). Within the rings 18, and also within the springs 10 are split rings 21 that. are adapted to be er;

panded, for the purpose of clamping the ends oi. the springs 10 between the some and the rings 18, by means of sorew-threaded taper plugs 22.

The spring 10 alone receives the normal forces exerted longitudnially oi its EtKlS between the arms 1) and the driving wheel, and

to that end it is provided with a n'iaterially greater (lG-lGBWJf flexibility than the inner spring 11 which is brought into action only when the forces exerted between the con nee-ted inen'ibers exceed the normal or other predetermined values. this arrangement is, that the spring 10 may be so designed that the stresses to which it will be subjected will be much lower than the maximum stresses which the n'iater-ial is capable of sustaining, with the result that the, spring will be very durable in service. Since the spring 11 is brought into play only under abnormal conditions, which are likely to occur only infrequently, the said spring will also be veryduralole. It 01- The advantage of lows, therefore, that the combination poss'esses great flexibility and strength, As the end convolutions of the spring 10 are clamped between the members 18 and 21,

the construction and arrangement of the parts is such that the spring 10 is subjected to universal-- use, but is relieved of the extraordinary shocks transmitted between the wheel 2 and the quill 4.

' I claim as myinvention:

1. The combination wit cured at its ends to one of the members and intermediate its ends to the other member, and another helical spring also secured intermediate its ends to the latter member and the extremities of which do'notnor mally engage the former member.

2. The combination with two relatively movable members, of a'helical spring 'secured at its ends to one of the members and intermediate its ends to the other member, and anothens'pring also secured intermediate, its ends to the latter member.

3. The combination with two;relatively movable members, of a helical spring secured at its ends to one of the members and.

intermediate its ends to the other member, and another spring possessing a different degree of flexibility also secured intermediate its ends to the latter member;

4. The combination with two'relatively movable members, of ahelical s'pring secured at its ends to one of the members and h two relatively movable members ot a helical spring seand difierent degrees of flexibility, means for securing the springs intermediate their ends to one of the members, and means for securing the extremities of the longer spring to the other member.

8. The combination with two relatively movable members, of a plurality of concentric helical springs of dilferent len ths,

concentric rings applied to the ends 0 the longer spring, means securing one of the rings at each end of the spring to one of the members, concentric rings applied to the springs intermediate their ends, one of which is carried by the other member, and means for clamping the springs between the concentric rings.

9. The combination with a vehicle wheel and a driving member, of a helical spring secured at its ends to the wheel, and intermediate its ends to the driving member, and

, another spring secured intermediate its ends to the driving member and the extremities of which do not normally engage the wheel.

.10. The combination with a vehicle wheel and a driving member, of a helical spring secured a't its ends to the wheel, and intermediate its ends to. the driving member, and another spring possessing a diflerent degree I of flexibility secured intermediate its ends to the driving memberand. the extremities of which do not normally engage the Wheel.

11. The combination with two concentri- "ma mounted rotatable members, of an in terposed helical spring andmeans for circuinferentially gripping convolutions of said spring and clamping the same rigidly sto the respective members.

12. The combination withtwo-cbncentrically mount ed rotatable members of a pluintermediate its'ends to the other member,

of another spring possessing a lesser degree of flexibility and also secured intermediate its ends to the latter member.

5. The combination with two relatively movable members, of a plurality of concentric helical springs of different. lengths secured intermediate their ends to one of the members, and means for securing the extremities of the longer spring to the other member. i

6. The combination with two relatively movable members, of a plurality of concentric helical springs of different lengths. clamping devices applied to the springs intermediate their ends for securingi the same i to one of the members, and clamping devices applied to the ends of the longer spring for securing the same to the other'member.

7. The combination with two relatively movable members, of a plurality of concentric helical springs of different lengths rality of interposed'helical spr pgs, and means for eircumferentially gripping convolutions of each spring and rigidlyclamp.

. ing the same to the respective members.

1-3. The combination'witli a driving meniber and a driven member each of which has substantially radial arm's or'sp okes, of helical springs interposed between adjacent arms or spokes of the respective members, and clamps which circumferentially grip convolutions of said springs. 14h The combination with an electric motor having arms projecting radially from its rotatablec meniber. of a wheel having spokes which alternate in position with said radial arms, helical springs interposed between said arms and said spokes, and cla ips which circumferentially'grip certain convolutions of said springs both interiorly and exteriorly andrigidly fasten the same to said. arms and spokes.

15. The combination with a rotatable driving member and a concentrically mounted rotatable driven member, of a plurality of uniformly spaced helical springs interposed I clamping the same to the respectiYe mem- 10 between said members, and clamping devices for circumferentially gripping convolutions of each spring and anchoring the same securely t0 the respective members.

lfifThe co'mbmation with two relatively movable members, of an interposed helical spring, and means for cireumferen-tially grlppmg convolutions of semi sprlng and hers.

In testimony whereof, I have hereunto subscribed. my name this 17th day of June- 1910. e v JOHN E. WEBSTER. Witnesses:

B. B. HINEs, M. C. MERZ.

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