US289319A

US289319A - Wood-molding machine

Info

Publication number: US289319A
Authority: US
Publication date: 1883-11-27
Anticipated expiration: 1900-11-27

Description

(No Modl.) r 4Sheethsheet 1.

I W. 0; SMITH.

WOOD MOLDING MACHINE;

N0. 289,319. v "Patented Nov; 27,

n PETERS, Fhowlilhogmplmr, Wnhingiun. n c.

(No Model.) 4 Sheets-Sheet 2.

W. 0. SMITH:

- WOOD MOLDING MACHINE. No. 289,319. Patented Nov. 2'7, 1883.

WTHE 5 s E 5 %b7 (No Mod-el.) 4 Sheets-Sheet 3.

' W. 0. SMITH.

WOOD MOLDING MACHINE.

No. 289.319. Patented Nov. 27, 1883.

\ 1mm Wm n Pmzns. Pmoum w. Wuhingion. ac

IfbZEIlTUZ' wil n SIM (No Model.) 4 Sheets--Sheet.4.

- W. 0. SMITH.

WOOD MOLDING MACHINE.

,3 19 Patented Nov. 27. 1883.

WT asses .MJA MW n. PETERS. Vhnloulhognphzn wnlmm, 11a

' proved machine. a

longitudinal section of the same as seen from NITED STATES PATENT FFICE.

v, XVILLIAM 0. SMITH, OFOAMBTRIDGEPOBT, MASSACHUSETTS.

wooo-MoLDiNc MACHINE. 1

SPECIFICATION forming part of Letters tent No. 289,319, dated November 27, 1883.

Application filed May a, 1883. (No model.)

I0 aIZZ whom it may concern:

Be it known that I, WILLIAM 0, SMITH, a i shown.

citizen of the United States, residing at (lambridgeport, in the county of Middlesex and State of Massachusetts, have invented certain .articles such as brushhandles and articles of a kindred natureand it] is carried out as follows, reference being had to the accompanying drawings, where- I Figure 1 represents aplan view of the im- Fig. 2 represents a central Ain Fig. 1. Fig.3 represents a cross-section on the line A. B, shown in Fig. 1. Fig. 4. represents a crosssection on the line 0 D, Fig. 1 i .5 represents a cross-section on the line E F, V

and Fig. 6 represents a cross-section on the line G H, all shown in Fig. 1. Fig.7 represents in detail aside elevation of thelongitudinally-niovable work-holder.

Similar letters refer to similar parts wherever they occur on the differentparts of the drawings,

a represents the which the uprightbearings b b are attached.

by means of belt-power, as usual.

(Z d are the expansive cutter-heads, to which the cutters c e are secured by means of screw bolts 6 e, as shown; a 1 I I 0 c are keys secured to shaft 0, which keys project into corresponding key-beds in the expansive heads d d, so as to admit the latter to be easilymoved to and from each other on the shaft 0, and to;rotate with the latter. 7

f is the longitudinally movable work-supporting carriage, which has grooved sides f f a i and is guided between the longitudinal guide} piecesf/fgflwhich are secured in an adjustable manner. to the top of the bed as shownin the drawings. The under side of the carriage f is provided with the cog-rack f, into which stationary frame or bed, to

is geared the pinion 71, secured to shaft h, as The shaft h is located in a bearing, h, secured tothe under sideof thestationary bed a, and is provided with a crank -wheel, h, and cranks h*, as. shown in Figs. 1, 2, and 6, or in a suitable or equivalent manner, so as to impart a reciprocating motion to the carriage f, by turning the shaft h, by means of its crank, in opposite directions. The cutter-heads d d are automatically moved. to and from each other,to impart the proper shape to the wooden handl.e,by the following mechanism, viz:

On the inside of each bearing b is secured a bracket or arm, i, to which is hung, at i, the

downwardly-projecting lever i, the lower end 1 of which is actuated by the inclined bar k, that is secured to the top of carriage f by means of set-screws k 7t, passing through slot-holes k 7c in the ends of the bars It, so that they may be adjusted to and from thecenter of the machine, according to the desired shape to be given to the wooden handle or other article that is being made. i i

To the upper end of each rock-lever i is se cured a tooth or projection, i that is made,

preferably, of hardened rawhide, to reduce friction, such tooth projecting into an annular groove, (1, on each cutter-head d, as shown in Fig. 3, and it will thus be seen that the heads 1 d cl are automatically expanded from each other during the forward motion of carriage f 1 by the inclined bars k 70 coming in contact with c is the rotary cutter-shaft, supported in the bearings b b, and provided with the belt-puli ley c, to which a rotary motion is imparted;

the outer edges of the lower ends of the rocklevers i i, causing said levers to rock on their res )ective fulcra i" i and their u 3 er rawhide projections, 1' 2' to expand from each other and to carry with them their respectivecutter-heads (Z (Z against the influence of the coiled springs d d, the ends of which are secured in a suitable manner to the heads dd, as shown in Fig. 3, and which springs d d are made of suiiicient strength to automatically pull the heads d (1 toward each .other when the rocklevers i i cease to expand them, and in this manner the cutter-heads (Z (l and their respective cutters are automatically moved to and from each other during the feed of the work,

so as to produce the desired curvature or taper,'which is determinedby the position of I00 .thebars Jr is on the sliding work-supporting ca ias fi I The device for securing the work during the operation of shaping it is as follows: To the top of the sliding carriage f is firmly secured the head-stocks Z and m, the latter being adjustable to and from the former by means of set-screw m, which passes up through slothole f and is screwed into the under side of the adjustable head-stock m, as shown in Fig. 2. The stationary head-stock Z has a vertical IO perforation, Z, in which the cylindrical shank Z of the head Z is vertically adjustable and caused to be held down by means of the weight Z, secured to rod Z the upper end of which, after passing loosely through carriage f, is

screwed into the under side of the shank Z.

Z isa coiled spring surrounding the rod Z between top of weight Z and under side of carriage f, as shown in Fig. 2, which spring aids in drawing the shank Z downward; but said 2) spring is not essential, and may be dispensed with, if so desired, and the weight Z increased proportionately.

In the upper end of the stationary headstock Z is a vertical recess, Z, in which rests loosely the shaping-bar n, the upper edge of which has an irregular surface, 11, corresponding to the shape to be given to the top and bottom of the articles operated upon. The bar at is hung in its rear end, at n, to the standard 3.0 n secured to top of frame a, as shown in Fig. 2.

In the head Z is located the centering-pin o, with outer centeringproj ections, 0'00. (Shown in Figs. 1 and 2.) The centering-pin o is free to turn around its axis in its horizontal bearing in the head Z and is retained in the latter by means of pin 0 projecting into an annular groove on the inner end of pin 0, as shown in Fig. 2.

Through the shank Z is made a lateral perforation, Z through which the shaping bar or lever n passes loosely, the upper end of such perforation Z being provided wit-h a steel pin, Z, firmly secured to shank Z, and adapted to rest on top of bar a and to be held in contact with the latter by means of the weight Z and spring Z, before mentioned, during the reciprocating motion of the carriage f.

p is a set-screw screwed through one side of stationary headstock Z, and having its in ner end projecting into a vertical groove, 1), in the side of shank Z, so as to prevent the latter from turning around its axis within the hollow head-stock Z, as shown in Fig. 4.

g The adjustable head-stock m has a vertical perforation, in which the cylindrical shank m of the hollow head m is vertically adjustable and adapted to be secured by means of setscrew 411*, the inner end of which projects into a vertical groove, m on the shank m, to prevent the said shank m and its head m from turning around within the hollow head-stock m while being adjusted.

Within the hollow cylindrical head m is the hollow sleeve an, adjustable ina horizontal direction, and is prevented from turning around its axis by the key m, projecting in corresponding grooves in the bore of the head m and exterior of sleeve m, as shown in Fig. 5.

Within the sleeve m is located the centering-spindle q, having enlarged head q, terminating as a centering tooth or projection, q, in its inner end, as shown in Figs. 2 and 7, between which and the centering projections 0 0 0 on the centering-pin 0 the wood blank is held during the operation of shaping it. The spindle q is moved, with the sleeve m, in a horizontal direction within the hollow head m, for the purpose of locking and releasing the wood blank between its centering-pins by means of the bent lever or handle 1*, the upper end of which is hinged at r to the link 1",

hinged at r to the outside of the hollow head m as shown in Figs. 1 and 7. The inner bent end of the lever or handle 1- is hinged at r" to the rear end of the sleeve m, as shown in Fig. 1 and in dotted lines in Fig. 7, by which arrangement the sleeve m and its spindle q are drawn backward by raising the bent lever 1" on its fulcrum i so as to release the wood blank from its centers after being shaped, and

to move said spindle and sleeve forward to the position shown in Figs. 1 and 7, to secure the wood blank between its centers, by turning the bent lever r and its connecting-link r to the locking position shown in said Figs. land 7. After the upper side of thewood blank has been shaped, it is desirable to turn it on its supports half a revolution, and to hold it in such a position for finishing its opposite side, and for this purpose I provide the rear end of spindle q with a handle, (1 by means of which the said spindle can beturned around its axis, and a locking-hub, q having one or more locking projections, g adapted to fit into corresponding notches, m, in the rear end of sleeve m, as shown in Figs. 1 and 2.

Q6 is a coiled spring surrounding the rear end of the spindle q, between the handle g and the locking-piece f, so as to hold the latter automatically in a locked position in relation to the sleeve m, as shown in Fig. 1. The locking-piece g has secured to it a peg or handle, f, the inner end of which projects into a slotted recess, q, in the spindle q, as shown in Fig. 2, said recess or groove q being made long enough in the longitudinal direction of the spindle q to enable the lockingpiece q to be moved backward on the spindle g by manipulating the handle q, so as to disengage the locking projections g from the notches m on the sleeve m", to enable the spindle q to be turned half arevolution on its axis and to be retained in that position, and thus to turn the wood blank (which is held between the centering-points of the two headstocks aforesaid) half a revolution around its axis, to shape its opposite side after the first side of ithas been molded or shaped by, the

cutters.

a is a slot through the frame a, to enable the rod Z to have a free passage as the carriage f IIO g and its head m is moved forward and back during the operation of the machine.

s is an adjustable stop projection. secured to guide by means of screw 8, to prevent the carriage f from being moved too far forward, thereby preventing the cutters e e from coming in contact with theforward end of spindle tis an adjustable bracket secured to car riage f, and has hinged to it the lever t, provided with rest projection which serves as a centering-gage for the wood blank when the lever t is turned upward.

a u are standards secured to'carriage f, and havingtheir upper ends connected to pin a on the head Z by means of the coiled springs a a, so as to relieve the frictional resistance be-I tween the shank Z and hollow head-stockZ when the work is clampedbetween its centering-spindles.

The operation of the machine is as follows: Before the wood blank that is to be shaped is placed between the centering-points of the 1 head-stocks Zm, the carriage f is moved by means of rack and pinion f 7b to the limit of its stroke toward the right in Fig. 2, and the wood blank is then secured between the centering-points of the head-stocks Z m, in the manner as described. The cutter-shaft c, with its cutter-heads (Z (Z, is then set in a rotary motion, and the carriage f, with its headstocks, is moved toward the left in Fig. 2 by means of the rack, pinion, and crank, as described, the stationary irregular bar or lever n causing the head-stock shank Z, with its centeringsired curvature on top of the wood blank by its contact with the rotary cutters e e, the lat- I ter being automatically moved to or from each other by the action of the adjustable guides 70 k on the rock-levers i 13, havingthe rawhide teeth 13 engaging into the grooves d d on the heads 61 d, with its springs d d, for the purpose of giving the desired taper or curvature to the sides of the wood blank. After i the top of thewood blank has been shaped,

it is turned half a revolution on its centering' spindles and the opposite side shaped like the first, when it is detached from the centeringof a frame, a, a reciprocating carriage, f, carrying a center, q, and a rising and falling center, 0, a pattern, a, for moving vertically the center 0, a cutter-shaft, 0, two cutter-heads, (1, each carrying cutters e and keyed to theshaft to move longitudinally thereon, and devices connecting the cutter-heads with opposite sides of the reciprocating carriage to move the cutter-heads away from each other by the sliding movement of the carriage, substantially as described. y

2. The combination, in a molding-machine, of the reciprocating carriage f, the guide-bars is, arranged on the upper side of the carriage, means for adjusting the bars toward and from each other, the cutter-shaft c, the cutter-heads (Z, keyed to the shaft and having annular grooves cl, the pivoted levers i, having teeth at their upper ends arranged in the annular grooves of the cutter-heads, andtheir lower ends adapted to be acted on by the guide-bars on the carriage tomove the cutterheads away from eachother, and a spring connecting the cutter-heads to draw them toward each other, substantially as described.

3. The combination, in a molding-machine, of the reciprocating carriage f, the hollow stock Z thereon, the head Z, carrying the center 0, and having the shank Z, provided with the transverse opening Z, the pattern-bar n, pivoted at one end and passing through the opening Z and the weight Z having astem, Z passing through the carriage into the stock, and attached tothe lower end of the shank Z, substantially as described.

4. The combination, in a molding-machine, of the reciprocating carriage f, carrying the stocks Z and m, the head Z, having the shank Z, arranged in the stock Z, the center 0, keyed to rotate in the head, the hollow head m having a shank, m, arranged in the stock m, the sleeve m, the center in said sleeve, and having a head, q, the' pivoted lever 1-, connected with the sleeve m to move the center q longitudinally, and the handle q, connected with the outer end of the center q to rotate the latter, substantially as described.

In testimony whereof I have affixed my signature in presence of two witnesses.

WILLIAM 0. SMITH.