US325245A - hewitt - Google Patents

Description

No Model.) 2 Sheets-Sheet 1.

H. H. HEWITT. SLIDING DOOR.

(No Model.) 2 Sheets-Sheet 2.

H. H. HEWITT.

SLIDING DOOR.

No. 325,245. Patented Sept. l, 1885.v

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NITED STATES PATENT OFFICE,

HERBERT H. HEVITT, OF NEV YORK, N. Y.

SLIDING DOOR.

SPECIFICATION forming part of Letters Patent No. 325,245, dated September 1, 1885.

Application filed June 13, 1835.

To @ZZ whom it may concern.-

Be it known that I, HERBERT H. Hnwrrr, a citizen of the United States, residing at New York, county and State of New York, have invented certain new and useful Improvements in Sliding Doors, of which the following is a specification.

This invention relates to sliding doors, and has for its object to improve the operation of the same, and is particularly adapted to that class of car-doors constructed to move edgewise along the sides of the car away from the door-opening. Such car-doors have heretofore been provided at their four corners with shoes or bearers adapted to slide on top and bottom door-tracks secured to the sides of the car. Great difficulty is sometimes eX- perienced in manipulating car-doors of this class, as the shoes or bearers are caused to bind on their tracks by reason of the buckling or warping of the doors, and also by the rubbing of the central part of the doors against the carwalls, due to the outward bulging of the carwalls. Now, my invention is designed to obviate all difficulties arising from the buckling or warping of car-doors and bulging of carwalls, to simplify and lessen the cost of cardoor fittings, and to provide a secure locking device for the doors. In the iirst place I so make the connections oriittings of the cardoor as to embrace the principle that three points of support or bearings triangularly arranged always provide a steady base or freeworking bearings, irrespective of the form of the structure to which they are applied, and in applying this principle of construction to car-doors one of the supports or bearings may be placed at the upper part of the front or leading edge of the door, a second at the lower end of the front orleading edge, and the third one at or on the rear or following edge of the door, and preferably at or near the central part of the same; and in conjunction with these three supporting shoes or bearers are used three separate rails or tracks, each having a length about equal to the distance the cardoor is moved, thus saving over the old style (No model.)

tance the door is moved. A further saving in cost of littings is had in that the operatinghandle, which is a separate fittingin ordinary doors, is made a part of or integral with the shoe or bearer attached to the rear or following edge of the door, and which slides on the rail attached to the central part of the carbody, said shoe and rail also being so made as to constitute a locking device for the door.

My invention also embodies, in the opera` tion of sliding doors, the principle long applied to sliding windows and shades of carriages and cars and to sliding doors, as shown in the United States Patent No. 197,813, bearing date December 4, 1877, by which a window, shade, or dooris caused to slide in guides or ways to and from its opening in direction longitudinal thereto, and its front or leading edge is caused to move obliquely into the opening when it is about closed, and the rear or following edge is moved laterally into its side of the opening when the window, shade, or door is directly opposite the same, thus bringing the window,shade,or door within theframework or do0rposts; but to describe my invention more particularly I will now refer to the accompanying drawings, in which- Figure 1, Sheet 1, is a view showing part of the side of a car and my improved sliding-door attachments. Fig. 2, Sheet 1, is a horizontal sectional view on the line .r x, showing the door closed. Fig. 3, Sheet 1, is a similar view showing the door open. Fig. 4, Sheet 1, is a vertical section on the line y y, showing the door open. Fig. 5, Sheet 2, is an enlarged view of a part of the central guide-rail and its beari ngshoe in section, showing the rear edge of the door in closed position. Fig. 6, Sheet 2, is a similar View showing the rear edge of the door moved out ofthe door-opening. Figs. 7 and 8, Sheet 2, are edge and back elev-ations. respectively, of the central bearing-shoe; and Fig. 9, Sheet 2, is a view representing my improved method of operating car-doors applied to a hanging door.

In the application of my invention no change is made in the construction of the carbody. The top and bottom door-tracks, 65 and 66, are secured to the side of the car above and below the door-opening, but do not extend beyond the dooropening, and instead of being paral- IOO lel or partly parallel to the, side of the Car they are arranged at an angle thereto, their rear ends being at a sufficient distance from the side of the car to permit the door to slide freely from the opening along the car parallel thereto. The door is provided with a shoe, 70, at its front end, which embraces and slides on the bottom door-track, 66, and a shoe or hanger, 68, which embraces the top door-track, 65.

To support and control the movement of the rear.l end of the door, a rail or track, a, is secured about midway between the tracks 66 to the side of the car, anda shoe or bearer, b, constructed to embrace the rail afis secured to the rear end of the door. This rail a extends from the door along the side of the car to a'dist'ance about equal to the; wid-th of the door, and its end is bent at right angles and securely fastened to the inside of the doei. post 44, the bent part a beingrednced in wid-th, as shown at Fig. 4 and in the enlarged views, and its outer endhc?, is bent inwardly,for the purpose hereinafter explained. The Shoeor bearer b is secured by screws or rivets. to the outside of the door, near its edge, and is provided with an inwardly-projecting block, b, having horizontal flanges c c', so spaced as to embrace the rail a, the upper-flange, c, taking the weight of the rear end of the door by restfv ing on the top of the central rail, a, and verf tical ianges d d', projecting from the edges of the flanges cV c', arranged to bear against the inner side of the rail ct, to hold the shoe b always thereon, and so spaced as to pass over the narrowed bent end a/ of the rail a. The block b is recessed, as clearly shownin` Figs. 5 and 6, to admi-t the corner of the rail a,when the rear edge of the door is moved into the door-opening, Vas atFig. 6.

In line with the iianges o c are tlieperforated shoe b above and below the rail c, adapted to receive the door pin or staple 74, to lock the door when closed. On the front of the shoe b is the handle 78, and for convenience and cheapness of manufacture and application the shoe b b, handle 78, guiding and controlling iianges c c d d', and locking-lugs e e are of one piece of metal, preferably a malleableiron casting. The door, when closed, sets within the door-posts 44, or in rabbets or recesses formed therein, said rabbets or recesses being shown in the drawings as produced by the sheathing 52, which is secured to the front of the doorposts, but does not entirely cover the same. To open t-he door, the rear end is moved outward until it is clear of the door-post, 44

or sheathing 52, the anges d' d of the shoe b,

by coming in contact with the inside face of the rail a, preventing any further movement in this direction. The door is then moved along its supportingtracks, the central track, a, passing through an opening inthe rear stile and between two central rails of the door; and the bent end c2 of the central track forms a stop for the door, when it is fully opened parallel to the side of the car, by the flanges d d of the shoe b coming in contact therewith. In closing the door the front end, being guided by the inclined tracks 65 66, moves obliquely into the door-opening against the front doorpost, and the rear end is pushed into the openying within the edge of the sheathing 52, the

corner of the rail a entering the recess in the block b of the shoe. The lugs e e are then so located that the door pinor staple 74, which is connected to the shoe by means of a chain, can be passed through them and behind the rail or track a, thus preventing the outward movement and opening ofthe door. The lower end of the pin or staple 74 is perforated for the reception of a seal or other suitable securing device. I

In applying my improvements. to hanging i doors the plan illustrated in Fig, 9v may be adopted, the upper front end being provided i with a shoe or hanger, 68, which supports; this I end ofthe door on the top door-track, 65 the bottom door-track, 66, being secured to the f bottom of the door, which is guided and controlled by the bracketshoes 70, secured to the From the preceding description of my iniproved three bearingfsupports applied to. cardoors the application of the invention to other forms of sliding doors will bereadily suggested. VVhatI claim, and desire to secure by Letters Patent,v is- 1. In combination with a sliding door,th-ree g short bearers or supports attached thereto, one at the upper and one at the lower part of the front edge, and the other at or near the central part of the rear edge, and three independent xed tracks or guides, one secured above the door-opening-,one below the door-opening,

i and the other one extending from the central lugs e and c', projecting from the edge of the part of one side of the door-opening, thus providing the door with three` bearingpoints c triangularly arranged for all positions occupied by the door, substantially as set forth.

Vcar, the central track or rail, c, and shoe b being as beforer described.

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2. A car-door provided with three bearers or supports attached thereto,one at the upper part and one at the lower part of the front edge, and the other one at or near the central Vpart of the rear edge, in combination with three independent tracks or guides secured to the Carbody, one above and one below the door-opening, arranged at an angle to the side of the car, and the other one extending from oneside of said opening and secured in a central position to one side of the car-body, parallel thereto, substantially as and for the purpose set forth.

3. The combinati-on, with a central guidetrack secured to the car-body, of a bearer or shoe adapted to slide thereon, secured to the rear edge of the door, and an operating-handle forming apart of or integral with said bearer or shoe, and means,substantially as described, for supporting and guiding the front end of the door, substantially as set forth.

4. The combination, with a central rail attached to the side of the car-body, and with its end narrowed and bent at right angles and secured to the door-post, of a sliding shoe or support attached to the door, and having a bearing-surface which embraces the longitudinal part of the rail, and projecting flanges which bear against the inside of the same and arranged to pass over the bent end of the rail, substantially as and for the purpose sct forth.

5. A guide rail or track secured to the central part of the wall of a Carbody, with its end bent at right angles and secured to the door-post, and a bearer or support secured to the car-door, constructed to bear on the rail or track, and provided With a locking device adapted to engage with the rail or track when the bearer or support passes over the bent end of the rail or track, in combina` tion, substantially as set forth.

6. In a sliding car-door, -in combination, the top door-track, G5, the shoe or hanger 68, the bottom door-track, 66, the shoe 70, the central rail or track,a, the supporting-shoe b, and the car-door and car-body, substantially as and for the purpose set forth.

7. In combnation,the central rail or track, a, the supporting-shoe b, with the handle 7 S, forming a part thereof, or integral therewith, and the candoor and car-body, substantially as and for the purpose set forth.

8. rIhe shoe b, provided with recessed block b', bearing-flanges c c', and stop-anges d d', in combination with the rail or track cc, with narrowed bent end a', and the car-door and carbody, substantially as and for the purpose set forth.

9. In cclnbinatiointhe shoe b,bearing flanges c c, stop-flanges d d, the perforated projecting lugs e e, the door pin or staple 74, the central rail, a, and the car-door and car-body, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand, at New York, county and State ot' New York, this 17 th day of March, 1885.

HERBERT H. HEWITT.

Witnesses:

ALFRED SHEDLOOK, H. D. XVILLIAMS.

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