US673804A - Dumb-waiter. - Google Patents

Description

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UNITED STATES PATENT EETcE.

EMMIT WILLIS VAN FLEET, OF GALENA, OHIO.

DUMB-WAITER.

SPECIFICATION forming part of Letters Patent No. 673,804, dated May '7, 1901.

Application filed August 17, 1900. Serial No. 27,175. (No model.)

To @ZZ whom it may con/cern:

Be it known that I, EMMIT WILLIS VAN FLEET, residing at Galena, in the county of Delaware, State of Ohio, have made certain new and useful Improvements in Dumb- Waiters, of which the following is a specification.

It is the object of lny invention to provide an improvement in dumb-waiters of the class adapted for use in domestic service as well as in hotels, restaurants, dre.

The invention is embodied in the construction, arrangement, and combination of parts hereinafter described and claimed.

In the accompanying drawings, Figure lis a perspective View, part being broken away, of my invention as arranged in use. Fig. 2 is a central vertical section of the same. Fig. 3 is a perspective View showing the dumbwaiter raised above the floor from which its guide-frame is suspended. Fig. l is a detail section.

As shown in Fig. 2, the dumb-waiter or eupboard proper, A, is suspended from a floorsection B, which forms practically the cover of the hatch or opening in the iloor C, through which the dumb-waiter is adapted to pass. D indicates the box-like inclosure, which is arranged below the oor C and serves to receive the waiter proper when the same is lowered. The waiterA may be constructed in the usual manner. In this instance it is shown provided with a rectangular frame and wiregauze sides, also doors. It is permanently and rigidly connected with the hatch-cover B by means of four rods a, (see Fig. 2,) which are provided with screw-nuts for securing them to the top of the waiter proper. A considerable space intervenes between the latter and the said door-section B, as shown. The said section rests upon a frame E, which is attached to the under side of the door C by means of L-shaped screw-bolts e. (See Fig. la.) The said bolts pass up through the frame E, and their bent ends project laterally into recesses or sockets formed in the edge of the floor C. Thus the means oi attachment of the guide-frame E to the floor C are invisible from above or on the surface of the floor. Screw-nuts are applied to the lower ends of the bolts e, so that the frame E is rigidly secured in place. The bolts e also serve as tion or hatch-cover B,

means for adjusting the'frame E level or horizontal in case the floor be inclined or warped. The dumbwaiter is provided on opposite sides with runners or ribs c', which are provided with a tongue adapted to fit and slide in grooves in the pendent and opposite bars e of the aforesaid frame E. These ribs or runners a project above and below the dumbwaiter proper, and at their upper ends they may be connected with the movable floor-sec- Their upper ends are provided with slots,in which are pivoted locking pawls or dogs F, (see Fig. 3.,) the same being normally thrown outwardly, as seen in Fig. 2, by springs.l They may also be thrown out by gravity. When the dumb-waiter is lowered, the said pawls F engage the stops or shoulders c on the inner side of the guideframeE. Thusthedumb-waiterishelddown against the tendency of the weights Gto raise the same. Said weights are connected with the lower portion of the dumbwaiter, or, more particularly, with the lower portions of theribs ct', by means of a rope H, which runs on pulleys I, journaled in the pendent bars c of theguide-frame E. This rope H is adapted to slide more or less in its bearings in the lower portion of the dumb-waiterframe, so that the counterbalancing effect of the weights G is equalized and the waiter is guided with a minimum friction. As a means for releasing the dogs or pawls F, I employ cords e3, which are connected with a lever J, (see Figs. 2 and 3,) which is attached to the lower end of a short axle having a hand or a foot lever K on its upper end and which lies close to the floor-section B. It is apparent that to raise the dumb-waiter the lever K is rotated, and thereby the cords e3 pull the dogs F out of engagement with theshoulders e2, whereupon the weights will raise the waiter, which carries with it the Hoor-section B and rises through the hatch, as shown in Fig. 3. The box-like inclosure D conforms to the shape of the dumb-waiter and is attached to the guide-frame E of the latter by means of links or bars 0l. (See Fig. 1.) Binding devices or clamps L are applied to the upper or lower portions of box D. The latter is provided with one or more doors d', through which access may be had tothe dumbwaiter within. The lower portion of the box IOO D is provided With a refrigerating-chamber having a door d2, and Within which is arranged an ice-pan d3, as shown in Fig. 2. The door (l2 being opened, the ice-pan d3 may be inserted or removed, as required. It is obvious that any usual degree of refrigeration may be obtained Within the cupboard A by means of this attachment. The box D may be supported on the floor or bottom of a cellar by means of legs d4, as shown.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. The combination, with the ioor, having a hatch, and a guide-frame secured beneath the floor, of the dumb-waiter arranged slidably in said guide-frame, and having lockingpawls pivoted thereto engaging said frame, and a top which forms the door or closure of the hatch, a rotatable device attached to the said top and having a part projecting above, and cords connecting said device with the locking-pawls, all operating substantially as shown and described.

2. The combination, with a iioor, having a hatch, and a pendent guide-frame secured to the Hoor around the hatch, of a dumb-Waiter, having a top which is also the closure for said hatch, locking-pawls pivoted to the dumbhatch, of a pendent guide-frame arranged below the floor and surrounding the hatch, and L-shaped bolts passing through the frame, and their lateral projections engaging sockets in the door, and the dumb-Waiter proper adapted to run in said guide-frame, substantially as shown and described.

4. The combination, with the floor having a hatch, a guide-frame secured to the floor underneath and a du rnb-Waiter adapted to run in said frame, of a box-like inclosu re for the dumb-waiter,which completely7 surrounds the latter and thus normally excludes the outer air, the same being suspended over the said frame, but fixed in position and provided With doors for access to the du mb-Waiter, and a refrigerating-chamber, substantially as shown and described.

EMMIT WILLIS VAN FLEET. Vitnesses:

WM. E. MoLEoD, J. A. MiTcHELL.

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