US1799582A - Brake - Google Patents

Description

April 7, 1931. A. Y. DODGE BRAKE Original Filed April 17l 1925 INVENTOR AEQIELY DoDGE ATTORNEY Patented Apr. 1931 l lUNITED isTA'1i= S 'l PATENT OFFICE ADInI. Y. DODGE, lor' sourir BEND', INDIANA, msxeIefNonl 'ro BENDIX BRAKE coMPANY,

or `aoucrrr BEND, INDIANA, A conPoaA'rIoNor ILLINOIS DRAxnim minime fled April 11, 199s. serial-it. eaves. Divina' mi thsfapplmmnnea Aprn s, l i 1927. serial No. 181,299.l

all three shoes of the brake on a sing e an" chor engaged bythe secondary and auxiliary shoes. A

Another feature relates to a novel arrangement giving av three-point'support for the shoes against lateral movement, by the use a of the anchoring means and a connection bef tween the primary' and secondary shoes,

' -15 taken with a novel'cam between theprimary and auxiliary shoes which is provided with a flange or plate or the like extending past the free ends of the primary andv engaging their sides. Various other novel and desirable features of construction will be 'apparent'.*from-the following description of the illustrative'em-y bodiment of the invention shown in the ach companying drawing, Ain which: .2.5 Figure 1 is a vertical section through the brake,just;inside'the head of the drum, showing .the brake shoes in side elevation;

Figure 2 is a'partial vsection on the' line' 2-2 of vFigure 1, showing the novel-anchorage;

Figure 4 isa section through one of the shoes o n the line 4-4of Figure 1.,

Y .The brake selected for illustration includes a rotatable drum 10, at the open side of which is a suitable 'support such as a backing plate 12, and within which are arranged end to end primary, secondary, 'and'auxiliary brake shoes 14,16, and 18, each approximately 120 long, and which are illustrated as -being -stamped in 'channel form from sheet steel.

vThechannels of shoes 14 and "18 may be 59 carried by thel backing plate 12.

and auxiliary shoes than by the terms of the appended claims.

Figure .3 a partial section -on the vline 3-3 of vFigure 1, showing the connection be tween the primary and secondaryl shoes; and-- slight] narrower than shoe16, so that shoes l At their adjacent ends (forming .the sec-. ou'd set of, adjacent ends of the three shoes) l shoes 14 and-16 are providedfwith 'bushings' i 24 mounte'don'apivot 26 forming a floating connection between the shoes, and shown with an enlarged head slidably'engagingthe backing plate 12 to positionrthe` shoe ends laterally. An `auxiliary return spring 28 'urgesthe enlarged head of pivot 26 toward an adjustable eccentric stop 30.9A

1 Between the third set of adjacentsboe jends,- that is, between the free upper ends' of.

vshoes 14 and 18, there i's arranged the-ap lyv ing-device of the brake, illustrated as a ouble vcam 32 acting against a return spring 34, and providedwith a part such as a `flange or plate 36, which ma be a separate piece held by a screw '38, an which projects past the -shoe ends to engage the sides of the shoes to hold then laterally.

While one illustrativel embodiment has been described in detail, it is not my intention -'to limit the scope of the invention to that particular embodiment, or otherwise The present application is a division of my prior application No. 23,763, filed April 17., 1925, now Patent No. 1,630,059, dated May 24, 1927. 'f l .1. VA brake comprising, in combination, a drum, three :shoesl each approximately in length and arranged end to end, a support for saidV shoe, and means for restrainingthe shoes against movementin one direction par- -allel tothe drum axis including anchoring means fortwo 'adjacent shoe ends, a Ipivot connectionA for two other adjacentshoe ends and which is held against endwise movement, at least lin one direction, and a plying means f" including'a cam'betweenthe third set .of-adjacent shoe ends having at its end a part rojecting past said third set of ends to old them laterally. l l l 2. A- brake comprising, in combination, a drum, three shoes each approximately 120 *in lengthand arranged end to end, a support 'for said shoe, and means for restraining the two adj aent shoe ends, a connection for two other adjacent shoe ends, and applying means including a cam between the third set of adjacent shoe ends having at its end a part projecting past said third set of ends to hold them laterally.

3. A brake comprising, in combination, a druma plurality of shoes within said drum' acting' upon the same zone thereof, a support for said shoes, together with means providingja three-point support for said shoes restraining the same against movement in a directionA toward said sup ort plate and substantially parallel to the' rum axis, said support means including (l) anchoring means l for two adjacent shoe ends, `(2) a pivot connection for two other adjacent shoe ends, and (3) means 'secured to an applying means p0- ,sitioned between and contacting the ends of a third set of adjacent shoe ends.

In testimony whereof, I have hereunto signed my name.

ADIEL DODGE.

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