US171296A - Improvement in adjusting pressure-feet of molding-machines - Google Patents

Description

J. S. LO OMIS.

ADJUSTING PRESSURE-FEET 0F MOLDING-MACHINES. N0.171,Z9 6. Patented Dec.21, 1875.

N. PETERS. FNOTO-LITHOGRAFHER, WASNMGTON, Dv C.

PATENT OEEIoE.

JOHN 'S. LOOMIS, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN ADJUSTING PRESSURE-FEET OF MOLDING-MACHINES.

Specification forming part of Letters Patent No. 171,296, dated December 21, 1875; application filed November 2, 1875. i

To all. whom it may concern:

Be it known that I, J OHN S. LooMIs, of the city of Brooklyn, in the county of Kings and State of New York, have invented a certain novel and useful Improvement in Adjusting Pressure-Feet of Molding-Machines; and I hereby declare in what manner the same is to be constructed, arranged, and operated, reference being had to the accompanying drawings, which are lettered to correspond with and form a part of the specification.

To enable those skilled in the mechanic arts to onstruct and operate the same, I will desci e it as follows, to wit:

Btitore describing the individual parts of my invention, I will here state that its object is to produce ELIIIOIG uniform pressure upon the difl'erent surfaces or planes of the strip to be dressed for moldings or for other purposes while passing through the machine, and when it becomes necessary, as in a planing-machine, two independent pressure-feet, arranged one at the back of the revolving cutter-head, and the other, as shown in the drawings, immediately infront of the cutter P, may be employed, both arranged and operating substantially as set forth in the following words:

Figure l is a side elevation of a moldingmachine.

A is the supporting frame-work or table, upon which the bed 0 rests. B B are curved arms, provided with curved slits, in which the bolts X X are operated to adjust the slitted head H and pressure-foot F nearer to or farther from therevolvingcutterl upon either a thin or thick molding, or upon a strip, m, of different thicknesses. O O are supportingbraces secured to and at the rear of the headblock H, for the purpose of throwing the pressure-foot F from the cutter while adjusting it to the diiferent thicknesses of the strip m, provided with a vertical curved slit, in which the pin X operates, when the pressure-foot F is molding-machine A.

The molding is shown upon the table or bed 0 at m. P is the cutter or plane. F is the pressure-foot, provided with the slitted shank R, and secured to the head H, to be operated at different angles, by means of the bolt and nut N in the long straight slit in the said'head, in combination with the slitted braces (l O. S S are standards to support the cutter-head. T T are toggle-joints of the curved arms B B. W W are weights to produce the pressure through the foot F upon the molding m.

The novelty of thisiuvention consists in the mode of operating a single pressure-foot at different angles, to suit the diflerent thicknesses V and surfaces of the moldings or strips m, in close proximity to the cutters, without being in danger of coming in contact with the same. It further consists in carrying the pressurefoot F from, instead of against, the cutter, to operate upon a thick or thin material, by means of the slotted lug O, placed behind the pressure-foot F.

What I claim as novel and useful, and wish to protect by Letters Patent of the United States, is-

The pressure-foot F, with slotted shank R, operating at different angles upon the screwpin X, in combination with the slotted transverse head H and arms B, with the supporting-braces (3, all arranged and operating in the manner and for the purpose set forth.

In testimony whereof I hereunto subscribe my name in the presence of two witnesses.

JOHN S. LOOMIS. Witnesses:

JAMES P. MOLEAN,

ROBERT A. MORRISON.

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