US1612529A - Table crumber - Google Patents

Description

Dec. 28 ,1926. l1,612,529

F. w. NURENBERG TABLE CRUMBER Filed June 1b. 1925 ATTORNEY Patented Bec. 28, 192?.

Unire stares FRED W. NURENBEBG, OF BRGOKLYN, NEVI YORK.

TABLE CRUMEER.

Application filed June 1G, 1925. Serial No. 36,073.

Among the principal objects which the present invention has in view are: To provide a crumb collecting device operable by the, and as a result of the, movement of thel crumber across the table; to insure the rotation ot the collecting brush with which the crumber is provided; and to simplify and cheapen the construction.

Drawings:

Figure 1 is a front view ot the crumber constructed and arranged in accordance with the present. invention, a portion ot the crumb collecting brush being cut away to show the construction therebehind, the broken lines in said figure being used for .showing the dumping position of the crumb tray;

Figure 2 is a. top plan view ot the same on enlarged scale7 showing the driving mechanism for the brush partly in section, and a portion of the overhang ot the crumb tray cut away;

Figure 3 is a sectional view, the section being taken on the line 3 3 in Figure 1, the broken lines in said figure being so disposed to indicate the inactive position ot the driving` wheel of the driving gear;

Figure 4 is a similar view showing the driving wheel in active position;

Figure 5 is a cross section, the sect-ion being taken as on the line 5-5 in Figure 2.

As seen in the drawings the crumb tray has a partly cylindrical body 10, provided with a swinging iat bottom plate 11. The bottom plate 11 is held in operative relation to the body 10 and the brush 12 by a. spring 13. The bottom plate 11 swings on the pivot pin 14 from the closed position -shown in full lines in Figure 1 to the open position shown by dotted lines in said figure. when the handle 15 is pressed upward. The ends of the body 10 are closed by end plates 10 extending laterally of the body in parallel relation to form a bearing tor the twisted wire shaft 16 ot' the brush 12, and a guide for the loop 17 formed on the bearing plate 18 which supports the boss 19 in which the short stud shaft 2O is set. The shat't 20 supports the driving wheel 21.

As seen in Figure 2 ot the drawings the driving gearing for the brush 12 employs a gear pinion 22, which is mounted rigidly on the shaft 16. The shaft 16 is journaled in the journal box 23 which slides in a recess 24 in the forward edge of the outer .end plate 10. The teeth of the pinion 22 mesh with the teeth of the internal gear 25 with which the driving wheel 21 is provided. The difference in the diameters of the pinion 22 and the driving wheel 21 gives the ratio ot the speed to the two wheels.

The bearing plate 18 swings on a pivot 26. The bearing plate 18 is held in its lower position by a spring` bar 27, the free end of which rests upon the boss 19, as shown best in Figure 3 of the drawings.

The result ot the above described construction is that whenever the operator using the handle 28 presses the apparatus upon the table cloth for collecting crumbs thereon7 he forces the wheel 21 into friotional contact therewith, the wheel 21 and the plate 18 on which it is mounted yielding upwardly, the spring 27 being flexed to permit the action. Thereafter, however, the spring 27 operates to exert a pressure upon the plate 18 and the wheel 21, which maintains the frictional engagement of the said wheel with the table covering. As and when the wheel 21 is rotated, the pinion 22 and the brush 12 operatively connected therewith are rotated proportionately tast, and, by reason of the location of the said pinion the direction of rotation of brush is the same as the wheel 21. The brush sweeps the table covering directly in front of the front edge ot the tray bottom 11, and any crumbs in the path of the tray are swept rapidly by the brush upon the said bottomv and into the body 10.

Whenever the tray is suticiently loaded and it is desired to get rid of the contents the handle 15 is pressed upward to drop the bottom 11 to the position shown by the broken lines in Figure 1. 1n this position ot the bottom the contents ot the tray are readily disposed of.

Claims:

1. A table crumber comprising a tray formed with a partly cylindrical body having closed ends comprised ot plates extending laterally of the body, a flat bottoni plate hingedly connected to one of said end plates and extending beneath said body and beneath and between said end plates in advance of said body` a rotary brush journalled between the ends ot said end plates in advance ot said bottom plate, a` traction wheel operatively connected with said brush for rotating said brush upon movement ot said traction wheel over a table cloth, a plate pivot-ally mounted on one ot said end plates. a bearing tor said traction wheel formed on said pivotally mounted plate whereby relative movement between said brush and traction Wheel is permitted, and orumber carried means for pressing said traction Wheel down upon a table cloth.

2. A table erumber comprising a tray formed with a partly cylindrical body liaving closed end plates extending in parallel relation laterally of the body, a at bottom plate hingedly connected to one of said end plates and extending beneath and between said end plates under and in advanee of .said body, a rotary brush journalled between the ends of said end plates in advance of said liinged bottom plate, a movable plate pivotally mounted on one of said end plates, a traction Wheel Carried by said movable plate, operative connection between said traction Wheel and rotary brush, and a spring bar connected at one of its ends to the end plate carrying said movable plate, said spring bar bearing at its opposite end against said movable plate for retaining said traction Wheel in engagementwith a surface over which the erumber is moved.

FRED W. NURENBERG.

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