US2126226A

US2126226A - Sandwich bun slicer

Info

Publication number: US2126226A
Authority: US
Inventors: Smith Benjamin Franklin; Smith Walter Edison; Broyles Wayne Clayton
Original assignee: Individual
Current assignee: Individual
Priority date: 1934-08-21
Filing date: 1934-08-21
Publication date: 1938-08-09
Anticipated expiration: 1955-08-09

Description

g- 9, 3 B. F. SMITH El AL SANDWICH BUN SLICER 2 Sheets-Sheet 1 Filed Aug. 21, 1934 Aug. 9, 1938. B., F. SMITH ET AL SANDWICH BUN SLICER Filed Aug. 21, 1934 2 Sheets-Sheet 2 Patented Aug. 9, 1938 PATENT oFFicr.

SANDWICH BUN SLICER BenjaminFranklin Smith, Walter Edison Smith,

and Wayne Clayton Broyles, Fort Smith, Ark. 7

Application August 21,

2 Claims.

This invention relates to apparatus for slicing bakery products, and in particular to apparatus for mechanically halving rolls such as sandwich buns. An object of the invention is the provision 5 of a machine for expeditiously halving a plurality of sandwich buns such as are used for barbecue and hamburger sandwiches and thelike.

Another object is the provision of a machine of such character having means for automatically positioning the buns with respect to the cutting element, and having means for carrying the buns into contact with and past the cutting element to a discharge point. Other objects will be apparent from the description.

The present disclosure constitutes an embodiment of the best means we have thus far devised for reducing the invention to practice, and it is to be understood that the specific details as shown and described shall not constitute limitations inconsistent with the scope of the invention as clamed.

In the drawings- Figure 1 is a side elevation of a machine as constructed in accordance with the principles of the invention.

Figure 2 is an end View thereof.

Figure 3 is a top plan view of the machine.

Figure 4 is a section taken on line 4-4 of Figure 3.

Figure 5 is a section taken on line 5-5 of Figure3.

Figure 6 is a vertical section through the knife assembly of the machine.

Figure 7 is a perspective view of the knife blade assembly.

Figure 8 is a fragmentary section illustrating a structural detail.

In detail the machine comprises a table frame consisting of legs 9 supporting a pair of parallel side bars I between the opposite ends of which are journalled rollers Ill carrying an endless conveyor belt 12 which operates between the side bars to form a moving top for the table. The legs 9 are suitably braced as by cross bracing l3 at the ends and a longitudinal brace l4. The frame is further strengthened by a foot piece l suitably secured to the lower ends of the legs and extending laterally at one side of the frame, their extended ends being connected with the adjacent side bar by inclined brace bars [6.

The longitudinal brace l4 provides a platform supporting a power source, such as an electric motor I! having a belt drive connection l8 with a driven pulley l9 fixed to a horizontal shaft 20 disposed longitudinally of the frame and journal- 1934, Serial No. 740,824

led in bearings 2! carried by brackets 22 extending laterally from the brace M at the side braced by the members l6. Thebelt i2 extends beneath the frame over an idler roller 23 supported transversely between the legs at one end of the frame. The belt [2 is driven from an end roller H, the axle of which extends through the side bar as at 24 and carries a fixed pulley 25 having a belt drive connection 26 to a pulley 21 fixed on a stub shaft 28 journalled in a bearing 29 carried by a support 30 on the adjacent frame legs. The shaft 28 has fixed thereto at one end a bevel gear 3! in mesh with an end pinion 32 fixed on the shaft 20 whereby the drive from shaft 2|] is imparted to the end roller and conveyor belt I2 as the motor I 1 is operated.

Adjacent the driven end roller II each of the frame side bars It is provided on its upper face with a longitudinally spaced pair of upright threaded stems 33 surrounded by coil expansion springs 34 which support ears 35 extending from the ends of a rectangular frame 36, the ears being apertured to slide freely on and over the stems 33. This arrangement provides a floating mount for the frame 36 which is spaced above the side bars it on the springs, its height above the bars and the conveyor belt l2 being regulated by tensioning nuts 31 on the stems. The end rollers H are so placed that the top flight of the conveyor belt I 2 runs substantially flush with the upper faces of the side bars W.

The frame 36 supports a plurality of loose running fluted rollers 38, preferably three, which extend transversely across the conveyor belt in parallel slightly spaced relation. In the clearance between the bottom of frame 36 and the side bars It, and substantially between the two foremost rollers 38 respecting the feed end F of the machine, is disposed a reciprocatory cutter element 39, such as a slicing knife having a thin flat blade with a serrated edge 40, which extends transversely of the machine parallel to the rollers 33 with its ends extending laterally beyond each side bar W. The knife is carried at its'ends in upright arms 4! on a cutter bar 42 provided with lateral slides 43 that work through guideways 44 carried on a platform 45 forming a part of, the table frame and extending transversely across and beyond the opposite sides beneath the side bars I B, which bars are recessed from their under faces as at 46 to accommodate the cutter bar 42. At the drive side of the machine the cutter bar arm 4! has a pitman connection 41 with a crank stud 68 on a counterweighted wheel 49 fixed to one end of a shaft 50 journalled in a bearing 5| carried by the platform 45, which shaft has fixed to its other end a pulley 52 having a belt drive connection 53 with a pulley 54 fixed on the shaft 20 whereby as shaft 20 is rotated the driving connec tion just described will effect reciprocation of the cutter bar and knife. A brace 55 from the longitudinal brace 14 provides adequate support for the extension of platform 45.

Longitudinal guides 56 are provided at each side of the conveyor belt l2 'over its major extent from the feed end F, being carried by slide brackets 5! adjustably mounted at appropriate intervals on the upper faces of the frame side bars. In service, a desired number of sandwich buns are placed on the conveyor belt and the machine set in operation, the drive being such, as to advance the conveyor from the feed end F to the discharge end D. As they approach the cutter assembly the buns are engaged by the foremost roller 38 which presses the buns firmly on the conveyor belt thus insuring positive movement to the knife 39'which reciprocates and cuts the buns in half. Before halving is completed the buns are engaged by the middle roller 38 insuring positive movement completely past the knife, whence they pass to-the rearmost roller and are delivered to the discharge end D of the machine without separation and misalignment of the two halves.

We claim:

1. In a sandwich bun slicing machine, a conveyor, a halving knife extending horizontally across the conveyor, a presser roll immediately in advance of said knife, and a presser roll immediately behind said knife, said rolls being spaced apart slightly directly above the knife.

2. A'sandwich bun slicing machine comprising a frame, an endless belt conveyor therein, a cutter .bar supported in said frame for reciprocation transversely of the conveyor, a common means in said frame for driving the conveyor and reciprocating the cutter bar, a halving knife carried by said bar and extending transversely across and above the conveyor, a supplemental frame carried by the machine frame above said knife, means for adjusting the height of said supplemental frame with respect to the knife, and a plurality of transverse presser rolls journalled in said supplemental frame in parallel slightly spaced relation parallel to said knife.

BENJAMIN FRANKLIN SMITH. WALTER EDISON SMITH. WAYNE CLAYTON BROYLES.