US1117643A - Clamping device for sliding doors. - Google Patents

Description

H. 15 J, DOMMER.

CLAMPING DEVICE FOR SLIDING DOORS.

APPLIUATIQN FILED 11111111914.

191 l 7,6431, Patented Nov..1'?, 1914.

J y j 1 O O O O O O iZ/f W1; Q am JM UNITED STAES PATENT FFCE.

HERMAN DOMMER AND JOHN DOMUS/IER, OF CHICAGO, ILLINOIS.

CLAMPING DEVICE FOR SLIDING DOORS.

.To /z/l ylli/tom it may con cern lic it known that we. llrnMAN DoMMEu and Joux Donunn. citizens of the United States, residing at ('hirago, in the county of Cook and State of Illinois, have invented crrtain new and useful Improvements in Clamping Devices for Sliding Doors, of which the followingr is a sptwiliration.

The present. invention relatesI to clamping devices for sliding doors, and is particularly designed for use on freight carshaving doors which are suspended from a track at thel top, being confined by means of guide brackets. lt frequently happens that in this type of doors .the freight settles against the. door during a trip, and causes it to bind against the guide brackets which makes it very dilli cult to slide the door open.

It is the object of the invention to overcome this difliculty by providing a clamping device of simple construction which securely holds the door during a trip, and which is adjustable to release the door and allow the same to be easily opened.

For a complete understanding of thel invention, reference is had to the accompanying drawing whereinn Y Figure 1 is a front; elevation showing the application of the invention; Fig. 2 is a section'on the line 2-.J otFig. 1, and Fig. 3 is a horizontal section on the line 3-43 of Fig. 2.

Referring specifically to the drawin'r, at 10 is shown a door slidably suspended irom a track 11 mounted on the side of a freight car. To the sill 12 are secured the clamping devices which form the subject matter of the present invention. Two clamping devices are shown, but -it is obvious that the number may be varied to suit different conditions. Each clamping device consists of a bracket 13 providedv with an outstanding boltin flange 14 whereby it is secured to the sill 12. The outer portion of the bracket is provided with an upstanding lug 14 which limits the outward swing of the door. The bracket is recessed from the top to the bottom, and in said recess is located a clamping member 15, swinging laterall)7 with respect to the door, the lower end of which member is secured to the corresponding portion of the bracket by a pivot pin 16. The upper end of the clamping member extends up above the top of the bracket and has an enlarged portion or jaw 17 adapted to engage a bracket 17*l Specification of Letters Patent. Application filed March 9, 1914.

the lower cud of the door' Pat ented Nov. 17, 1914. serial No. 823,504.

mounted on the outer side of the door und extending below the same. The lug i4a is provided with a recess 18 to accommodate the )aw portion 17 of the clamping member when the latter is swung out to release the door.

The clamping member 15 is provided with a slot 15) extending ohliqucly in an outward and upward direction from a point near the pivot pin 16. The upper end ofthe slot terminates in a short inward bend 20. A roller 21 carried by a slotted rocker arm 22 works in the Vslot 1f). A shaft Q3 is journalcd in the brackets 13, and the rocker arms or both clamping devices are secured to said shaft. Ihe shaft is square in cross-section and provided with flanged bearing rings 23a. One end ot tlnl shaft 23 is provided with an operating lever 24. The lever is pivoted to thi` .shaft as shown at 25 in order to permit it to he swung out of the way when the clamping device is released.

ly swinging the lever Q4 up against the side ol' the rar7 the rocker arms 22 are swung to :i snhstantially`horizontal position, the rollers 2l riding up the oblique slots 1S) and toi-ring the clamping members 15 against the brackets 17a. In this position the rollers rest in the inward bends 2O at the upper ends of the slots, and there is no tendency of the rollers to ridi` down the slots. The lever 24 may be scaled to the side of the car. lVhen the door is to be opened. the lever 24 is swung out from the car, causing the rollers 21 to ride down to the lower end of the slots 19 and swing the clampingr member l5 away from the bracket 17 until the jaw portion 1T rests in the recess 18 in the lug 14". Then the door is free to be swung out slightly and may be easily'slid open.

The shaft 23 forming the pivot of the rocker arms 22 is located between the sill. 12 and the intermediate portion of the clamping members 15, whereby the structure is placed close to the sill, and rendered more compactv than would be possible otherwise, and there are no parts on the car therefrom an excessive distance. We claim:

l. The combination with a slidin door and a sill. of a bracket mounted on t e sill, a. door clamping member pivoted to the bracket and operating laterally of the door, said member having an oblique slot, ai rock i shaft carried by the sill and located between thc sill and the intermediate portion of the projecting diam ping Working m clamping x'nember, and

the. fsck shaft.

The uomonatm'; with im a) si', o a bracket mou a oms dampmg operai-mg la terlly mms@ er afm im said the roc-ker arm am ot for swinging tha means for operating a sliding door nted on the s l, oted l*co the; of the slot extending o f the Siu ma with respect 0 band,

I swinging between the. .s and the ltsrmeate p01- ton of the clamping membel, a maker arm on said shaft, means cm'ie by the rocker arm an@ working in the oblque slot im: the clamping msmbe, and means Gr operating therock shsft. I In testimony whereof We, ax our signatures in presence of' two Witnesses. HERB/MJ Dom/Em JOEE EGMMER.' Witnesses:

S. J. Luffam?

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