US61111A - photo-litho - Google Patents

Description

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v J EREMIAH STEVER AND J. A. WAY, 0F BRlSTOL, NEGTIG'UT, ASSIGNORS T0 JOHN H. SESSIONS, OFTHE SAME PLAGE. Lam Patent ivo. 61,111, ma Janna-y s, 18ct.

IMPROVEMENT IN WOOD LATHES FOR TURNING KNOBS.

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TO ALL WHOM I'i MAY CONCERN:

Beit known that we, .IEREMIAH S'rEvER and Jenn A. WAY, of Bristol, county of Hartford., and State of Connecticut, have invented a certain new and useful Improvement in Machines for Manufacturing Furniture Knobs, Src.; and to enable others skilled in the art to make and use the same, we will proceed to describe, by referring to the drawings, in which the same letters indicate like parts in each cf the figures.

The nature of this invention consists, or rather it will beunderstood, from the speciiication and drawings, the object of which is to greatly facilitate the manufacture, produce uniformity of shape and proportion', and thereby produce a cheaperand better article. In the. accompanying drawings- Figure 1 is a front elevation. i l

Figure 2 is a right-hand end elevation.

Figure 3 is a left-hand end elevation.

Figure 4 is a back sideA elevation.

Figure 5 is a top or plan view.

A. is the framework to or upon which the mechanism is arranged. Bl is the driving-shaft, having a pulley,

a, to which the power is applied, by means of a. belt, to give impetus to tlie machine. B2 is a cam-shaft which receives its motion from (indirectly) the pulley b, on the driving-shaft B1, through the .stud or loose pulley c, which has a pinion gear, CZ,l secured thereto, which works into the large gear d', upon the outer end of the shaft B2. C is a skeleton cylinder secured upon the front end of the shaft B3. D are spindles, having sockets in the front ends thereof, for the reception of proper dogs or holders for holding the blank or block from which the knob is to be made by the machine; these spindles are made much inthe usual way of making lathe spindles, alte. These spindles are arranged in bearings formed in the rim of the cylinder C, having pulleys, E, of about uniform size; these spindles are operated alternately by a belt, or its equivalent, which passes over the pulleys E from the pulley F, which is securedon one end of the driving-shaft B1.' Gr is a bracket, made in the form of' a segment of a circle, and a little larger than the diameter of the cylinder C, which is rmly secured to the framework A, and otherwise of such shape and proportion as to secure strength and firmness thereto during the operation of the machine. Upon the face of this bracket, Gr, are arranged studs, H, 1 2 3 5, the faces of which are of about equalor corresponding distances from each other, and with the centres of the spindles D in 01' upon the faceof these studs, H, are arranged the tool-stocks I, the object of which is to hold properly-formed or shaped tools for cutting or forming the blank or block into the required shape knob, which (the tool) is secured thereon i'n any of the common ways. These stocks are actuated back and forth, up to the blank, successively 0r simultaneously, as may be desirable, by the actionof the cams J', or their equivalent, arranged upon the back side of the bracket G, by proper guide-ways, so as to secure a rm and easy motion thereof, and so as to be actuated by any proper mechanism arranged toproduce a corresponding motion thereof with the cylinder C. L is an arm extending fromthe framework outward in front of the ends of the spindles D, upon which is arranged a presser-bar, a, the object of which is to press the blank firmly upon the dogs or holders, which are tted into the sockets of the spindles D, and is operated by a blow against the outer end thereof, (the bar a,) or bymeans of a hand-lever, b. M is a clearer` clutch, secured upon the outer end of the spindle N, having its bearings in the framework A, so as to allow of both a lateral ,and'vibratory'motion thereof. The object of this clutch is to remove the knob, by an independent self-acting motion of' the clutch M, from the spindle dog, by receiving it (the dog) between its prongs, while the prongs themselves pass (as` the cylinder or spindles move from one resting point to another) between the ends ofthe spindles D and thelnished knob, when by the joint action 0f the lever O and cam P, or their equivalents, upon the spindle N, will remove the knob from the dog, in readiness to receive another block. On the back end ofthe shaft B3 is secured a notch-wheel, Q, having the same number of "notches or depressions in the edge thereof as there are spindles in the wheel C. R is a ratchet-bar. R2 is a leek-bak, which throws the bolt S into or draws it out of the notches in the wheel Q; these bars or shafts, R `and R, are operated to perform their proper functions by means of the cam- T1. U1 'is a lever whichmoves the trimming stock I2, Aand-is actuated by the cam T3. U3 is a lever which operates, through its proper connections, the segment camplate K, and is actuated bythe cam T4.

Novi2 in lputting this machine, in operation, take a block, out the proper size, first having a hole made therein to receive the dog or holder which is ittedto the sockets of the spindles; D, place it upon the dog justl back of the presser L, and'by the aid thereof (the presser) force it firmly on to the dog, one after the other, as often as the movement of the cylinder, and as the block, by the action or motionof the cylinder, comes against the tool-stock, the tool thereon is compressed todo its appointed work, or its portion of the Work; thenceV forward to the next toohsnecessively, until the knob is completed and thrown from the dog, by the uniform and repeated action of the respective parts, as above described. Each spindle, while rapidly revolving with its block, is brought directly to theraetionl 4of the tools arranged upon the`-tool- Stocks I, 1 2 3 3ro., so that each may perform its respective portion oi` the Work nearly at the same instant of time. And as the spindle holding the finished knob :novos along near to the clutch, the clutch M wili'enter astride of thedog, between the end of the spindio D and the knob, and by the joint action of the lever O and cam P, the spindle N, with the clutch M', will be thrust forward, and the knob removed from the dog thereby.` This operation will be repeated sixteen times' (more or less, according to the number of spindles, D, used in a machine) during each revolution of the cylinder C. It will be particularly noticeable that the device which operates the `cutting tools is designed to move or to actuate the stocks I towards 'the spindles D, at-or nearly at the same instant of time, and also between eaehperiodical movement of the cylinder, during` each revolution. We believe we have thus shown the nature, construction, and operation, so as to enable others skilled to make and use the same therefrom.. v I

What Weolaim, therefore, and desire to secure by Letters Patent, is-ff 1. We elaimtho cylinder C, incombination with the notch-'wheel Q, ratchet-bar R, loek-bar R2, bolt S, and actuating pin-.cam T1, for the prposc of giving `a periodical movement to said cylinder C, substantially as described. 2. We claim the tool-stocks I, 2 3 4 5 7, in combination with the earns J, arranged upon the plate K, lever U3, with its connecting arms actuated by the cam Ti, substantially as and for the pnrpose described.

3. We claim the clearer cclntehM, in combination with the lever O, and cam P, vibrating spindle N, subv stantially' as'and 'for the pnrposedoscribcd.

A 4. We claim organizing in one machine the above enumerated successive operations for turning, finishing, and clearing the knobs from the machine ,as described, `when arranged and oporatingsubstantially as set forth.

' JEREMIAH STEVER, [1.. y

JOHN A.. WAY. 3.]

Witnesses; I

S. P. Niewnnn, CHARLES SMITH.

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