US569789A - leland - Google Patents

Description

UNITED STATES PATENT OFFICE.

HENRY M. LELAND, OF DETROIT, MICHIGAN, ASSIGNOR TO THE LELAND d: FAULCONER MANUFACTURING COMPANY, OF SAME PLACE.

TRlMMlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 569,789, dated October 20, 1896.

Application filed September 21,1895. {serial No. 563,206. (No model.)

To all whom it may concern:

Be it known that I, HENRY M. LELAND, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan,

have invented a certain new and useful Improvement in Trimming-Machines; and I de clare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it to appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to certain new and useful improvements in a trimming-machine,

I5 and has more particularly for its objects, first, to provide a trimming-machine with a crown-molding attachment; second, also with a scale or graduations on the inside face of the gages; third, also to provide such a machine with degrees marked upon the bed or table of the machine.

My invention consists in the construction, combination, and arrangement of devices hereinafter described and claimed, and illustrated in the accompanying drawings, in

which Figure 1 is a view in perspective illustrating my invention. Fig. 2 is a plan View of a portion of the table or bed. Fig. 3 is an end 0 elevation with one of the gages removed.

Fig. 4 is a section on the line a 4, Fig. 3.

I carry out my invention as follows:

In the drawings, A denotes a bed or table. A is any suitable support therefor. 13 represents a slide-frame connected with said table.

0 is a reciprocatory knife-slide, C being the base thereof.

D is a bridge secured upon the slide-frame and forming a way at the top of the knifeslide, as shown at B, in which the top of the knife-slide reciprocates.

E and E are the knives secured to the knife-slide. Said knives converge toward the middle of the bed, so as to give a shear cut as they are moved toward the adjacent end of the table.

F is an L-shaped gib supported upon the slide-frame 13, upon which the base of the knife-slide reciprocates. As shown in the drawings, the base of the knife-slide is formed on its under face with a rack-bar G with which meshes a driving-gear H.

H denotes the bearing for the shaft H of the gear H, which meshes with said rack-bar. 5 5

J denotes a ratchet-wheel provided with a hub J upon the rear end of the shaft H K denotes a weighted arm receiving the ratchet-wheel J and its hub J.

L is an operating-lever.

M M represent gages located upon the table A. M denote the gage handles or levers for tightening them in position.

Q indicates an arc-shaped slot for the gages M M, respectively, to provide for the accurate adjustment of the corresponding gage.

M is a clamping-bolt having the gage-handle M eccent-rically connected therewith.

M' is a nut 011 the lower end of the bolt.

R is a gib above said nut.

The parts hereinbefore described are preferably constructed and arranged as embodied in United States Letters Patent issued June 11, 1895, No. 540,837, to Henry M. Leland and Frank E. Ferris, assignors to the Leland, 7 5 Faulconer, and Norton Company. I do not, however, confine my present improvements and invention solely to a trimming-machine of that particular construction, although such a construction is preferred, but I would have it definitely understood that I contemplate the improvements hereinafter described and claimed as applicable to any suitable trimming-machine within the scope of my invention. 8 5

It is well understood that heretofore it has been difficult to hold crown-molding in place upon a trimming-machine for mitering the same. To provide for this need, one feature of my present invention contemplates the pro- 0 vision of a crown-molding attachment or fixture (Indicated in the accompanying drawings by the numeral 1.) This attachment or fixture, as shown herewith, consists of a bracket 2, formed with a horizontal arm 8, 5 bolted upon, the bridge 1), as indicated at 4:. The bridge is thus made to both form a guide for the upper edge of the knife and a support for the clamp, leaving the entire center of the table clear for the work. The center of the table being clear the entire lower surface of the clamp can. be used from one end to the other for holding the Work. The front portion of the bracket 2 is projected downward over the front of the bridge D and thereabove, as shown, and form ed with guidefianges 5 and 6 to receive a vertically-movable clamp 7, constructed, preferably, with an elongated base 8, and an upwardly-exten ded'arm 9, provided with an elongated slot 10, through which a thumb-screw 11 is passed into the face of the bracket to hold theclamp in any given position of adjustment. The base 8 of the clamp is preferably elongated, so that it may hold a strip of crown-molding in place adjacent to either of the gages M M. I would have it understood that I do not limit myself solely to this particular manner of constructing and arranging the crownmolding attachment, as I contemplate as coming within the scope of my invention any suitable structure and arrangement of such an attachment for holding a strip of crownmolding in place adjacent to one of the gages of a trimming-machine while the knife cuts the required miter or joint. As so constructed and arranged, however, it will be seen that by simply turning the set-screw 11 the clamp 7 maybe rapidly and quickly and accurately adjusted upon the molding. The adjacent gage may readily be adjusted to the required angle to the bed A of the machine. The clamp 7 may then beinstantly adjusted into required position to hold the crownmolding adjacent to the gage upon the bed of the table,andan y desired number of-crownmolding joints can then be accurately cut as quickly and as readily and as perfectly as any other work could be trimmed in any ordinary machine. It Will be seen that the position in which the molding is thus held by 3 the clamp 7 against the adjusted gage is such that the knife meets it in such a manner as to form a shear, clean, and perfect cut. It will also be seen that by having the other gage of the machine adjusted to the proper angle upon the bed or table the strip of moldagainst underneath the clamp 7 without the necessity of further adjustment of the clamp to cut the corresponding joint on the molding, so that the two miters or joints required may thereby be readily and accurately cut. I contemplate, therefore, as coming within the scope of my invention, as regards this feature of my present improvement, any attachm out to a trimming-machine which may be brought into position to hold the molding in place while being cut to the required angle.

hile this attachment is expressly and particularly designed for mitering crown-molding, it will be evident that it may be employed also in certain pattern and O'DllGP'WOIk. Such an attachment therefore is found to add mation. lVhen not desired for use, the clamp 'cessity of measuring and marking it.

provision of the linear scale upon the gages ing may readily be placed in position t-heredesired cut. 7 maybe quicklyadjusted upward out of the way, or by removing the thumb-screw the clamp can be removed entirely from the machine.

Another feature of my present invention contemplates the provision of the inner face of the gages with a scale or graduation, as indicated at the numeral 12. The gage M is omitted in Fig. 3 in order not to hide portions of the crown-molding attachment and the graduations on the inner face of the gage M. By providing the side of the gages with suitable graduations or a linear scale the operator is enabled to trim or cut his work to exactly the desired length without the ne- The also greatly facilitates the utility and scope of the machine, adding greatly to the advantage of such a machine.

The gage M is omitted in Fig. 2, so as not to hide the adjacentend of the slid-e 7.

Another feature of my present invention contemplates the graduation of the bed of the machine adjacent to the gages. As shown more particularly in Fig. 2, I contemplate graduating the bed, iving every separate degree between any desired limits, as, say, from thirtyto one hundred and thirty-five or more degrees. These degrees are laid off by striking a circle of considerable diameter, as from an index-circle of, say, thirty inches, thus affording absolute accuracy, which may be relied upon more certainly than in the use of most bevel protractors commonly in use. By this means the gages can be readily set at any desired angle, whereby angles for bevelgears or other pattern-work may be made in a most convenient and accurate manner, as may be required.

A trimming-machine provided with my present invention is thus made to work accurately and economically, effecting a large saving of time in its superior conveniences and adaptations,whil-e at the same time such a machine is made adapted fora much larger range of work. i

This attachment is especially adapted for the accurate and rapid jointing of crownmolding, inasmuch as the molding can be placed in position quickly, While the knife coming in contact with the molding underneath the slide adjusted thereupon strikes the molding at the upper edge thereof with a drawing or shear cut, pressing it more firmly against the gage, thereby preventing any tearing of the edge of the molding and forming a perfectly smooth out. This attachment is also particularly useful in jointing irregular-shaped patterns. This irregular patternwork has heretofore been commonly done by hand, but by my improved device if any straight edge can be found on the pattern the gage can be set to the desired angle from terially to the scope of work that may be aci complished upon a machine of this descripsuch straight edge, and the slide be adjusted thereupon to enable the knives to form the Thus, for example, where two halves of an irregular pattern are to be jointed together my improved machine is able to make first a joint on one piece by moving the knives in one direction and then to make the desired joint on the other piece by moving the knives in the opposite direction. This attachment adds very materially to the scope of work possible to be done upon a trimmingmachine.

lVhat I claim as my invention is-- 1. In a trimming-machine, the combination of a bed, a gage, adjustable upon said bed, a support above said bed, a vertically-adjustable clamp depending from said support to engage upon the top of crown-molding and other work having any straight edge to be placed against the gage and hold the work upon the bed and against the inner face of said gage, said clamp supported above said bed to leave the bed unobstructed and its lower face presenting a clamping-surface throughoutits length,a slide-frame, the upper bar of which constitutes the above support, aknife reciprocatory in said frame longitudinally of the bed and arranged to exert its force upon the work only in a direction toward the inner face of the gage in the act of cutting the molding, and means to reciprocate said knife in said frame, both the clamp and the knife in the act of cutting holding work firmly against the gage to effect a smooth out, substantially as set forth.

2. In atrimmingmachine, the combination of a bed, adjustable gages M, M, reciprocatory knives converging toward the middle of said bed and movable in opposite directions longitudinally of the bed to exert their force upon the work only in a direction toward the inner face of the adjacent gage in the act of cutting the molding, a support above said bed, and a vertically-adjustable clamp depending from said support to engage upon the top of crown-molding and similar work and hold the work upon the bed and against the inner face of said gages, said clamp supported from above said bed to leave the bed unobstructed, and provided with an elongated base 8, the lower face of which presents a clamping-surface from one end to the other to hold the work in place adjacent to the inner face of either or both of said gages, whereby the reciprocation of the knives in one direction may cut a joint on one piece of molding, and their reciprocation in the contrary direction may cut the opposite joint upon a companion piece of molding, substantially as set forth.

3. In a trimming-machine, the combination of a bed, adjustable gages M, M, a slideframe B, a knife-slide reciprocatory in said frame longitudinally of said bed provided with knives converging toward the middle of the bed, means to reciprocate said knife longitudinally of the bed, a bridge D upon the slide-frame forming a way at the top of the knife-slide, a supported bracket 2 upon said bridge having a vertical depending portion formed with guide-flanges 5 and 6, a vertically-movable clamp 7 supported in the depending portion of said bracket, and provided with an elongated base 8, the lower face of which presents a clamping-surface from one end to the other, and with a vertical arm 9 having a vertical adjustment in said flanges, and means to hold the slide in any given position of vertical adjustment,wl1ereby the bed is left free and unobstructed, said knives arranged to exert their force upon the work only toward the inner face of the adjacent gage in the act of cutting the molding, whereby the reciprocation of the knives in one direction may cut a joint on one piece of molding, and their reciprocation in the contrary direction may cut the opposite joint upon a companion piece of molding, substantially as set forth.

In testimony whereof I sign this specifier tion in the presence of two witnesses.

HENRY M. LELAND. Witnesses:

N. S. WRIGHT, O. B. BAENZIGER.

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