US1104064A - Shock-absorber. - Google Patents

Description

J. A. MGKNIGHT.

SHOCK ABSORBER. APPLICATION FILED APR. 8, 1914.

1,104,064, Patented July 21, 1914.

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WW ywwm J! L MGKNIGHT. I I SHOCK ABSORBER. APPLICATION FILED APB-B, 1914.

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INVENTOR.

end. a sleeve 50351}! A. MQKNIGET, Q3:

iiiiiiiili LQUISVILLE, KENTUGKY, $6. .AzCOB-PORATIGN KENTUCKY.

ASSIGNGR T THE IiZlLLEJITISlvZIFG.

. SHo'CK-ABSDH'BER;

kipp'iication filed. April 8, 191%. Serial No. 830

Specification of Letters Patent.

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certain new and useful improvements in Smock-Absorbers, of which the following 1s a. scecii'icntion;

ran it ction 0E springs positioned between the and axis of a. vehieisl.

An obgect is toproi-ide a device in which tance to the action of the springs 12;

i by graduated steps. imotueroh act is the PZ'O'QTISIOH of a device 3 not. destroy the eiiiciency thereof. I object is-to provide a. device of zicier described that n iii be economimi 1 construction and eiiicient in service.

iththe' foregoing and other OiijQCtS in the invention consists of novel c0n-' motion and arrangement of parts illusted in'the accompanying drawings, comng ihree sheets, -which form a partof specification, in which. is set forth an :2; wdimont of the invention, but it is to be nncierst'ood that changes, variations and nodifications'niay beresoi ized to that come LZ'li'i'lifl the scope of the appended claims.

, .a the drawings, in which like reference 9 several views; Figure 1, is anelcvution 1 invention as applied for service; Fig.

the is. side alteration; Fig. 3, a plan View, with cap removed and the arm broken away; i. a plin of the inner side of the cap, with an arm broken away; Figs. and 6, modifications respectiiely of 3 and i; 7,3 section'oniine of Fig. 1; :5-

8, a perspective o'fithe inner brake shoe; 9, a perspective of the outer brake shoe ig. 10, a perspective of the intermediate member; Fig. 11, a perspective of the cap.

Referring to the drawings -1-- designates a cupped-shaped casing from the ,periphery of which extend an arm. -2, pro

'vicieci on its outer end with a sleeve 3--,.,

ihr-ough' whicha bolt may be passed for the pnrp os f attachment toa movable part of the v is, A. cap, .or cover -5' has an aunt, extending from the periphery thereof, a i

son and State of Kentucky, have invented his invention relates to improvements in devices for-minimizing the shock due to the i which the Wearing of the friction elements characters designate corresponding parts in i I in having on its outer 1 through which a 130% may he passed for attachment to port of vehicle. The arms and 6 may he sectional, as shown in Figs. Land or integral as shown in Fig. ii. The cap 5 his over the casing 1, seating on an exterior, annular seat -8, in such manner that Host and. moisture will be excluded from the interior of the casing, while permitting free relative rotary IDOYQIX'IQllt of the two parts. The casing has a =central appcrture '-9 through which passes a. screw threaded hoit -10- that engages in :1 ing --1l-,in te ral with and extending in vfrom the cap, the bolt being pro vioeci with a lock-nut l:2- that prevents the bolt from becoming loose from vivrntion. The bolt 16 holds the in position on the casing. The lug 11 has lateral e321- tensions, or Wings -13 on which is disposed :1 layer of suitable sonnalwleatiening innierini -lai. such as leather, that may be secured in piece any suitable means, such as rivets An intermediate member -16-, the casing 1,1135 and lateral slots a central perforation 1 7 0n the exterior of tlie'intermedime member areleternl cxtens1o11s,or wings ,--19, which extend to the Wails of the The Wings 13 lie within the slots 18, anti are of less thickness than the Width of the sio'ts,

the arrangement being such. that the cap 5 may have a limited movement relative to the casing 1 before the Wings strike the sides of the slots, and advance the intermediate memher. I

Concave-convex brake shoes --2() beer on opposite sides of theintermetlizi'te member 16, and offer frictional resistance to its movernient, during a portion ofits travel. A pair of concavo convex brake shoes '21,Ihav

ing inward extensi0ns'.22- on each end thereof, bear against the innersurface of the walls of the casing 1. A plurality of springs 23-. positioned between, and bearing on the inner and outer brake shoes serve. to

centrally positioned Within -l8-, radiating therefrom, for the reception of the lug 11 and. associated w1ngs 13.

in the same radial line. as shown in Fig. 5.

force the shoes respectively against the termediate member and the wall of the easing and resist the relative movement thereof. The relatively movable parts '1. and 5 may be attached to relatively movable parts of the vehicle by suitable 111eans,sucli as the.

. merits demand.

'vance them simultaneously.

In Fig. 3, the position'of the different members is that assumed when the vehicle, towhich the absorber attached, is travel-. ing under normal conditions over a smooth surface. The space between the wings 13 and the sides of the slots 18 is arranged to allow of a limited movement of the body of the vehicle relative to the axle with out bringing resistance offered by the brake shoes into service. Vhen the body approaches the axle a distance tobring the wings 13 into contact with the walls of the slots in the intermediate member, said member will be carried therewith against the friction of the brake shoes 20: when the distance traveled is suilicient to bring the arms 19 against the extensions 22 on the outerbrake shoes, the movement of the intermediate member relative to the inner shoes will cease, and said member will advance the outer shoes, and the additional resistance due to the larger area of frictional contact of the outer brake shoes will be offered to the movement of the body. I It is to be observed that the initial movement of the intermediate member is opposed by the inner brake shoes, but that owing to'the greater area of frictional contact the outer brake shoes do not move therewith. After a predetermined extent of travel the arms 19, on the intermediate member impinge on the extension 22 of the outer brake shoes and ad- As the intermediate member picks up the outer brake shoes, the movement thereof relative to the inner shoes ceases and the added resistance to torque is the difference between the frictional area of the inner and outer brake shoes. In Fig. 5, is illustrated a modification wherein only one inner and one outer brake shoe is employed, they being nearly circular, instead of arcuate, on the rebound, or movement of the body from the axle, the sequence of actions is the same, but in the reverse direction. It is thought that the manifold advantages, and operation of the invention may be clearly understood from the foregoing Without more extended description. 1

1 Having thus described the invention so that anyone skilled in the art pertainingthereto may, make and use the same, I c la1m;

l. A shock absorber comprising a casing, a cover therefor, an intermediate member' engaged by said cover, friction members be tween said intermediate memberandsaid casing, said cover adapted to advance said therefor, an intermediate member positioned in said casing'a lug on'said cover adapted to engage said member, a brake shoe ems bracing a major portion of said member, a brake member in contact with a major portion of the wall of said casing, springs'pd sitloned between said shoes. a pro ection on said intermediate member adapted to engage the shoe in contact with casing wall.

3. In a shock absorber, a casing, a cover for said casing, an intermediate member engageable by said cover,a plurality of friction couples disposed between said'intermediate member and said casing, said couples comprising inner and outer members, springs between said members forcing same respectively against said casing and intermediate member, projections on said intermediate member adapted .to engage said members and advance same simultaneously.

.4. In a shock absorber, a casing, a cover rotatabl-y seated on said casing,an intermediate member positioned in said casing, a lug on said cover entering said member, a bolt passing through said casing and engaged in said lug. a projection on said lug adapted to engage said member,- a brake shoe in contact with said member, a brake shoe in contactwith the wall of-said casing and a projection on said member adapted to engage said second mentioned brake shoe and advance same.

5/In a shock absorber, a casing anda cover, said casing and cover relatively rotatable, a bolt connecting said casing'and cover, an intermediate member within said casing, means associated with the covenfor engaging said member. brake shoesi'ncontact with said member, brake shoescontacting with the wall of said casing, means'ass ociated with said member for simultaneously engaging said second mentioned brake shoes.

6, In a shock absorber,-'a'ca'sing and a cover therefor rotatably'. associated, arms extending from'the periphery of each thereof, an intermediate member positioned within said casing, a plurality of inner brake shoes bearing on said member, a plurality of outer brake shoes'bearing against the wall of the casing, springs positioned between CIT said brake shoes, a lug on said cover adapted to engage and advance the intermediate member relative to said; brake shoes, and a projection on said intermediate member adapted to simultaneously engage and advance said outer brake shoes.

7. in ashock absorber, an open ended casing,'en arm extending from the periphery thereof, a cover rotatably secured on said casing, an arm extending from the periphery of said cover, an intermediate mem oer within the casing, a lug on said cover adapted to advance said member, inner and outer brake shoes bearing respectively on said member and the Wall of said casing, springs between said inner and outer shoes,

a projection on said member adapted to ad- Yancethe outer brake shoes simultaneously.

and outer brake shoes bearing respectively on said member and the Wall of the casing and an arm on said member adapted to advance the outer brake shoes simultaneously.

JOHN A. MOKNIGHT. Witnesses F. H. KAPPA, W. B. MUNNELL.

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