US60681A - hamilton brown - Google Patents

Description

@eine tstes stent @fitta J. HAMILTON BROWN, OF WATERTOWN, MASSACHUSETTS. Letters Patent No. 60,681, dated January 1, 1867.`

IMPROVEMENTS. IN HAND PEGGING MAGHINES- TOALL WHOM IT MAY CONCERN:

Be it known that I, J. HAMILTON BROWN, of Watertown, in the county of Middlesex, and State of Massachusetts, have invented certain Improvements in Pegging Machines, of which the following is agfull, clear, and exact descriptionyreference being had to ythe accompanying. drawings, making part of .this specification,

in which Figure 1 is an elevation of a hand pegging machine with my improvements applied-thereto.

Figure 2 is a plan of the under side of the same. K

Figure 3 is a vertical section on the line :v x of iig. 2, the plunger being shown depressed.

Figure 4 is a vertical section on the line y y of g. 2, the plunger being raised.

Figure 5 is a horizontal section on the line e z of fig. 1.

Figures 6, 7, 8, and 9, details to be referred to.

In hand pegging machines of the ordinary construction, where the spring which raised the plunger was placed around outside of it, the diameter of the lower portion of the plunger was reduced to accommodate the spring, and consequently but a small portion of the surface of the plunger had any bearing against the interior surface of the shell or easing which surrounded it, and the violent jarring occasioned by the blow of the hammer caused the plunger and parts secured thereto to have a lateral play, which frequently resulted in their being deranged or broken.

. To overcome the above-mentioned diiiiculties, and to produce a durable, compact, and reliable machine, is the object of my invention, which consists in a hollow plunger, within which is placed the'spiral spring by which it is raised after its downward stroke, while within its exterior are formed grooves or channels of varying depth for the reception of the levers which regulate the motions of the knife and feeding-point, by which constructionv the surface of the plunger through nearly its whole llength may have a bearing upon the interior of the shell or casing, and the plunger and parts connected therewith are not liable to jar oif, the knife being so connected by its lever to the plunger that one peg only is cut o on the commencement of the downward stroke of the plunger at the instant preceding the .descent of the driver to force it into the hole last made by the awl, whereby the clogging incident to cutting several pegs in advance, orkone peg by the upward stroke of the knife, is avoided, while the lever which operates the feeding-point through its connection with the plunger causes the point to rise and advance, to fallland recede, in such manner that the feed of the machine over the sole is accomplished with a greater degree of certainty than with those ofY the old construction. My invention also consists in certain devices for varying the distance of the pegs from the edge of the sole, and for keyingthe awl and peg-driver to the plunger, which will be set forth hereafter.

To enable others skilled in the art to understand and use my invention, I will proceed to describe the manner in which I have carried it out. o

i In the said drawings, A is the shell or casing of the instrument, which is grasped by the handwhen ready for use. B is adtrough for holding the strip of peg wood, a, which is fed forward to be cut into pegs by the follower C and rubber spring Dl The trough is secured to Ynear the bottom of the casing A by a screw, and is open at both ends, at its outer end for the purpose of inserting the peg wood, and at .itsI inner end to allow thev wood to he pressed up against the casing =so as to lie in the path of the knife E suiiiciently far to insure the cutting of a single peg immediately on the commencement of the downward stroke of the pistonor plunger F, to the lower end of which are secured by' a pin, 12, (see tig. 3,) the peg-driver 6 and awl c, at a distance apart equal to that between two pegs, suitable passages for the awl and driver being provided in the bottom of the 4casing to allow them to slide freely therein. lThe plunger is made Khollow for the 'reception of a spiral spring, d, which is confined therein by a head, G, which screws over the upper end of the plunger, the lower end of thespring resting upon-a pin, H, which passes through rectangular slots, e, fo'rmed in the plunger, and also passes into the shell or casing for the purpose of preventing the revolution of the plunger within it. The awl is driv'en into the leather, and the pegs into the holes made by the awl, by a blow of a hammer upon the head of the plunger, and the awlqis extracted from the leather by `the recoil of a rubber spring, I, placedimmediately beneath the head of the plunger after the spring has been compressed between the head and top of the casing by a blow from the hammer. The cavity in the plunger for the reception of the spring is made eccentric so that sufficient sensi space may be had on ,the outside of the plunger to allow a'portion, '10, thereof tc be planed downto serve as a path for the upper end of a lever, d, which is -pivotedto' the casing at j', and swings freely in a vertical slot or opening, g, cut therein, and by means of which the knife E is operated. The motion of the machine along the edge of the sole for the purpose of spacing the distances between the pegs is accomplished by a feeding-point, Il, in the following manner: K is a lever of the form seen in section, iig. 3, which ispivoted atz'to the casing, within which is formed a ve'rtical slot, 7', to allow of the play of the lever therein, the surface of the outside of the plunger being provided with a groove or channel, c, in which bears the upper end of the lever K, which is moved out and in by the rising and falling of the plunger. The lower end of the lever K terminates in a projection, Z, which fits into a notch, m, formed in the heel of the curved armr or feeding-pointi, which is pivoted looselyat 'n to a block or table, L, (of the form seen in iig. 7,) which is moved in and out of a recess, o, formed between the lower end of the casing and the plate M, which rests on the sole, the bottom of the table being provided with a spring, p, to insure the necessary friction of the parts when the table is acted upon by the` lever K. The feedingpointlis so actuated that on the rising of the plunger F it shall iirst he tipped downward and then carried forward with the table by the projection l en the lower end of the lever 'K until it enters the hole last made by the awl, and then, by the continued upward motion of the plunger, be fed along so as to bring the peg and peg-driver'b directly over the hole, leaving it ready to be occupied `by the peg, and is then carried back out of the way of the awl c, which now descends with the driver to make a new hole simultaneously with the driving vof the last and only peg cut, and on the plunger again rising, the feeding-point enters the new hole and feeds the machine along. Thedetails of the movements of .the parts by which the feed is operated are as follows: The feedingpoint, as before stated, is operated by the lever K, the lower end of which, when the plunger is up, is pressed inward, carrying. the feedingpoint into the hole immediately below the peg and peg-driver. On the plunger commencing to descend, the lower end of the lever K is pushed out, raising and retracting the feeding-point, and driving the awl into the sole to make a hole. On the plunger commencing to ascend, the lever K is vibrated so as to throw the feeding-point into the hole in advance, just made by the awl anden the plunger still continuing to rise, the shell or casing is caused to rockforward onlits pivot, z', carrying the plunger with the a-wl and peg-driver, theawl being now in a position to make the next hole ahead, and the driver just over the aperture 11,. which contains the peg wood ready to be cut by the knife, to sever a peg therefrom in a manner which will now be described. The peg Wood Aex'tendsinto this aperture, 11, and on the commencement of the downward stroke of the plunger, the upper end of the lever J is thrown out, While the'lower end, to which the knife E is Ypivoted, is carried in, causing the knife to be pressed against the peg wood, cutting off aportion equal to the width of a single pcg, which is retained by the knife in the aperture l1, immediately over the hole in th'e sole and under the peg-driver. N is va fiat spring secured to the peg trough. for throwing the knifeback to allow the peg wood to be fed into' the aperture 11. O is the gauge which rests against the edge of the sole and determines the distance which the pegs are put from the edge. This gauge is provided with a shank or spindle, P, the lower portion of which is of a rectangular form, and ts snugly i within an aperture of corresponding form made in the plate M, while the remaining portion, r, of the shank is of a cylindrical form, and extends up into a cavity within the casing. Through the upper portion of the shank passes a pin, s, underneath which bears the top of a spiral spring, t, which surrounds the cylindrical portion of the shank, the bottom of the spring resting upon the upperl side of the plate M, by which construction the gauge is prevented from turning when adjusted for use. The foot of the gauge is so formed that no two of its sides are the same distance from the line of the holes made by the awl, in order that it may be used for gauging'the lines of the inner and outer'rows of pegs from the edge of the sole, and for varying their distance, if desired. When it is required tomake the holes only, toibe afterwards filled with pegs or metallic nails, it is simply necessary to check the advance ofthe peg wood.

Operation.

The peg trough B being supplied with the peg wood in a manner before explained, the operator grasps the casingof the machine, and having irst made a hole in the sole, places the feeding-peint therein, the gauge resting against the edge of the sole and determining the position of the line of holes to be made with the awl. A blow is now given to the plunger, when a portion of the peg wood is first cut o by the knife to form a pcg, which is struck by the driver and forced into the hole previously occupied by the feeding-point, the awl making a. new hole, frm which it is extracted by the rubber spring I, after which the pressure of the springd continues to carry np the plunger, when the feeding-point enters the hole'last madeby the awl, and then continues its motions, as already described, carrying the machine with it a distance equal to that between two pegs.- A second blow is now given, by which the feeding-point is first withdrawn from vthe hole in the sole, and then'retracted out of the path of the awl and peg-driver, the knife, Von the commencement of the downward stroke of the plunger, splitting otf a peg and retaining it the aperture 11 till struck by the driver at the latter end of the descent ,of the plunger. These operations are repeated by successive blows of the hammer on the plunger until the pegging is completed.

C'Zaz'm.

What I claim as my invention, and desire to secure by Letters Patent, is l The plunger F, made hollow fc'r the reception of the spring d, substantially as and for the purpose set forth.

I 'also claim the plunger F, with its exterior surface so formed as to give to the levend the required movements for causing the knife E to cut a single peg on'the commencement of the downward stroke of the plunger, for the purpose'speciiied.

also Claim the plunger F, With its` glOOVPl 7C and exterior surface se formed as tc cause the lever K to operate the feeding-point, substantially as set forth.`

I also claim the table L, so formed that, in connection with the lever K, al uniform sliding and rocking motion, viz, down and forward, up and back, will be given to the feeding-point, for'the purpose described.

AI also claim the gauge-plate O, operated by its spring, t, and having the lower end, q,ofits`sl1ank so 'formed as to it snugly a. slot Of corresponding form in the plate M, by which it is prevented from turning therein when in useafter adjustment, substantially as described.

I also claim the pin 12, or its equivalent, for performing the double office f keying the awl and peg-driver to the plunger, as set forth.

I also claim the removable head G, for confining the spring d within the plunger F, substantially. es described.

J. HAMILTON BROWN.

Witnesses:

A. W. PORTER, W. J. CAMBRIDGE.

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