USRE730E - Improvement in cracker-machines - Google Patents

Description

UNITE-n STATES' PATENT OFFICE.

JOHN iuccoLLUM, onivnw ronk, Yn. y.

IMPROVEMENT IN CRACKERK-MACHINES.

Specification forming part of Letters Patent No. 8,828, dated March 23, 1852; Reissue No.730, dated May 31, 1859.

To all whom it may concern:

Be it known that I, JOHN MCGOLLUM, of the city and county of New York, in the State of New York, have made a certain new and useful Improvement in Grackcr-Machines;`

and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the annexed drawings, forminga part of this specification, and to the letters of reference thereon.

` My invention consists in n combining a crackercutter and the bed against which itk acts when cutting with adjustable springs, to make yielding pressure at the point of impingement, which occurs a little before the cutter has reached the termination of its downward stroke, so that after the cracker is cut the edges of the cutters or molds remain a short time in contact with the surface against which they impinge, insuring a more perfectlyformed cracker than would result if the cutter merely impinged against the bed or resisting surface at the termination of its downward stroke.

The springs are made adjustable in two ways: First, to regulate the duration of the contact of the cutting and resisting surfaces, and, second to regulate the force of their yielding pressure during contact.

To describe my invention more particularly I will refer to the 'annexed drawings, which represent a well-known form of cracker or biscuit machine consisting of a feeding-table, a pair of reducing-rollers, a carrying-apron, and a reciprocating cracker-cutter and bed having my improvement iu combination.

Figure No. 1 shows a longitudinal elevation of the machine; Fig. No. 2, a plan view of the same; Fig. No. 3, a front view and scction through red line y, Fig. 2; Fig. No. 4, a view from bctweenthe side frames and section through red line x, Fig. 3; Fig. No. 5, a larger View of Fig. 4, showing the adjustingscrew I turned down so as to compress the spring; Fig. 6, a section of spring and column.

Letter A represents a reciprocating segmental cracker-cutter provided with cutters or molds B and docket-teeth C, as usual.

D is a clearer or discharging-plate, having perforations (not seen in the drawings) corresponding with the cutters and decker-teeth.`

lugs, H. through holes in the cornersY of the bed, the

E is a bed-plate,'against which the cutter acts, the dough to be cut being intermittently fed forward in a continuous sheet by the intervening carrying-apron F.

Letters Gr represent four verticalcolumns, respectively sliding in holes in lugs H H', which are screwed to the side frames of the machine. `On the lower part of each columnl a screw is cut, and furnished with screw-nuts I I', whichact to compress the helical springs J, the lower ends of which rest on the lower The upper ends ot' the columns pass bed being sustained by the fixed collars K, and secured to the columns by the screws and nuts L and slip collars or washers M, which last also, in conjunction with the screws and nuts L, hold the clearer-plate in its proper place. Eyy turning the screw-nuts I the bed may be raisedor lowered at pleasure, so that the length of time that the cutters remain in contact with the resisting surface (by reason of the yield. of the springs) may b e regulated with the greatest precision. By turning the screw-nuts I the force of the action of the springs may be increased or diminished without altering the relation of the cutting and resisting surfaces to each other as respects the duration of their contact with each other. By thus keeping the cutting and resisting surfaces in contact with each other a short time with spring pressure the crackers are more perfectly cut and their edges pressed by the beveled inside surfaces ofthe cutters, and with much less force than is requisite where a yielding pressure is not used, thereby saving the carrying-apron from wear.

In the use of springs there is another advantage-viz.,the capacity of the cutting and resisting surfaces to yield readily to extraordinary strains to which they are constantly subjected by flour-barrel chips and nails get ting in the dough and under the cutters, which are not generally sharp enough to cut through nails and chips.

Although I have described what I consider the best form of my invention as applied to biscuit and cracker machines, I do not wish to be understood as limiting myself to any specific form of construction, but will adopt any convenient arrangement by which the cutting and resisting `surfz'iees in crackermachines can be combined with adjustable springs, substantially as herein described.

What I claim a's my invention, and desire Y to secure by Letters Patent of the United States, is- Y 'lhe combination of adjustable' springs with a cracker-cutter and its resisting surface or bed substantially as hereinbefore described,

and substantially for the purposes herenbeforeset forth.

JOHN MGGOLLUM.

Witnesses:

F. C. TREADWELL, JR. J osEPH PARR, I G. G. TAYLOR.

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