G. P. HARTMAN.
BRAKE HEAD AND SHOE FOR FREIGHT CARS.
APPLIOA'HON FILED FEB. 18, 1914.
1 1 1 6,27 1.; Patented Nov. 3, 1914.
GEORGE E. HART'MAN.
BRAKE HEAD AND SHOE FOR FREIGHT-CARS.
1,1 HLZWL To all 'U'/l()llt it I/lllj/ com-era Be it known that l, (heoiaac F. ll.\l 'l.\l.\.\', a citizen ol' the l llltttl. States. residing at Specification of Letters Patent.
()neonta, in the county of ()tsego and State 0t Xew'York, have invented, certain new and useful Improvements in Brake Ileads and Shoes for l reight-t'ars'. and I do hereby declare the following to he a full. clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
lhis invention relates to new and useful improvements in brake heads and shoes. and has for its principal object to provide a brake head from which the shoe may be easily and quickly detached and a new shoe placed thereon.
A still further object of this invention is to provide a brake head which is simple in construction, cheap to manufacture. and du rable in use, and which may be easily and quickly attached to the ordinary type of brake beam.
\Yith the above and other objects in view, the invention consists in the novel combination and arrangement of parts which will be fully set forth in the following speeilication and accomlmnying drawings. in which.
Figure 1 is a side view in elevation of a brake head and shoe constructed in accord ance with this invention. Fig. .2 is a transverse sectional view taken on line 1%! of Fig. i, and l ig. It is a detail sectional view of the locking pin showing the means for holding the same in position.
Referring now to the drawings by char acters of reference, the numeral 1 designates as an entirety the brake head, while the numoral :2 designates the brake shoe. 'lhis brake head comprises the main body portion 3 which is recessed as at :l to receive the hanger. -'lhe ends of the body portion are bent as clearly shown in Fig. l. and terminate. in the faces 5 and ti. against which the brake shoe, which will be fully hereinafter described. rests. Intermediate the ends of the head and on the sameside as the faces 5 and (3 is provided the. dove tail groove. 7 which is provided with the rounded rear wall 8 as clearly shown in Fig. l. pair of cars 1) and U) are formed integral with the body portion and are provided with the key hole slots 11. the use of which will appear hereinafter. Ancxtension 12 is formed on the body portion intermediate its ends toward the stop .ntentetl .\'ov. 2). 15H I.
- Application filed February 18.1914. Serial No. 819.450.
and su stantially in alinement with the dove tail groove. said extension being preferably slotted as at lit to receive the T section which forms the brake beam.
'lhe brake shoe previously referred to by the numeral J. preferably comprises the arcuate body portion ll having the angular extension 15 formed at each end. said angular extension being adapted to overlie a portion of the brake head when the brake shoe is in place. suitable dove tail extension [ii is formed on the brake shoe intermediate its ends and in direct alinelnent with the time tail groow in the brake head. said extension eing provided with the curved outer wall l? as learly shown in Fig. l. pin i is provided and has formed integral with one end the angular extension 19 which is adapted to register with the re dneed poition of the key hole slot in thev ears ll and Li to permit the pin to be withdrawn. 'lhe nd of the pin opposite the angular extension ltl is bent as at '21) and is adaptedto lie between the extension ll formed on the ear and the body portion of the brake head.
sirila le siop '3'. is formed on the side of the brake head opposite the side carrying the ears 9 and 10 and is arranged to pre- \ent the brake shoe from passing entirely aci'oss the face of the brake head.
It will e evident from the foregoing that in use the rake head is secured lo the rake eam in the usual manner and wh n it is desired to place a shoe on the brake head the pin ll is withdrawn and the dove tail extension on the brake shoe brought in direct alincment with the dove tail slot in the brake head. and upon forcing the shoe 't \vill beapparent that the extensions if will o'-'el'lie the ends of the brake head as shown in Fig. l. .\fler the brake shoe has been forced to its full extent in place. the pin 1* is again inserted through the key hole slot in the ears and i l. and it will be evident that the brake shoe will be held from displacement. hould it ilk desired to replace the bra'licw-hoe at anv time. the same operation may be gone through and it will be apparent that with this imention a mrticularly simple and cl" l'ective device is provided whereby the brake shoes niav be easily and quickly interchanged without iacoineniencing the user in any war.
\Vhile in l shown and described the preferred embodiment of this invention, it is to be understood that such changes may be made in the combination and arrangement of parts as will fall Within the spirit and scope of the invention as claimed.
Having thus described my invention, I claim:
A device of the character described including a brake head, bearing surfaces formed at each end of the brake head, said brake head being provided with a centrally located transversely extending dove tail groove, the said groove being of uniform Width throughout its entire length, a brake shoe adapted to seat against the bearing surfaces, a centrally located transversely extending dove tail extension formed on the brake shoe, said extension being arranged to enter the dove tail groove in the brake head and also being of uniform dimensions throughout its entire length, a stop formed on one end of the dove tail groove in the brake head, said stop being arranged to 1,1 w en limit the lateral movement of the brake shoe with relation to the head, ears carried by the brake head on the side opposite the stop, said ears being ad acent to the dove tail groove, each of said ears being pro-- vided with a key hole slot, an upstanding member formed at the free ends of the uppermost ear, said upstanding member forming a groove between the outer end ofthe ear and the brake head and a pin arranged to pass through the key hole slot in each of the ears to prevent the brake shoe from becoming disengaged, the said pin being provided with an angular extension to lie in the groove between the upstandingmember on the ear and the brake head to prevent the same from being accidentally engaged. In testimony whereof I affix my signature in presence of two witnesses.
GEORGE l. HARTMAN.
\Vituesses CHARLES H. Bowmsn, SHELDEN H. GLORY.