US795912A - Tacking-tool. - Google Patents

Description

PATENTED AUG. 1,-1905.

\ A. HEBERT.

TAUKING TOOL. APPLIGATIoN FILED DB0. 7. 190s` 2 SHEETS-SHEET 1.

PATENTED AUG. l, 1905.

`2 SHEETS-SHEET Z.

A. HEBERT.

TACKING TOOL.

APPLIGATLONIILBD Dnc. 7. 190s uNrTnn STATES ARSENE HEBERT, OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY MESNE PATENT orrron.

ASSIGNMENTS, TO FRED E. PARMLY, OF NEW YORK, N. Y.

TACKlNG-TOOL.

Specification of Letters atent.

Patented Aug. 1, 1905.

`cially designed to be used in connection with lasting-machines which fold in the edge of the upper and hold it in place, the tool being used to secure the folded-in portions while held by the machine. In devices of this character the discharge end of the tool is pressed against the work when the tack is driven, and the tool is not moved in such a way as to throw the tacks which are in the magazine into the raceway. It is necessary, therefore, either to provide some means for automatically conducting the tacks into the raceway or to have the raceway lled from some outside source. The latter method is inconvenient and occasions loss of time,'and so far as I am aware the devices which automatically lift or conduct the tacks into the raceway and which have been found to be the most practical are those in which the tack-magazine is located without the main body portion of the device. It has also been ascertained from practical use that tools of this description are generally cumbersome and inconvenient to handle and that such a device may be used with much greater facility and convenience if all its parts are contained in a cylindrical casing which may be easily grasped by the hand.

The object of my invention is to produce a tacking-tool of the g'eneral character above referred to in which the magazine, raceway, and tack-driving mechanism are all contained in a cylindrical casing, which may be conveniently handled and in which simple and eifective means are provided for supplying tacks to the raceway, which leads from the tack-magazine to the pointwhere the tacks are driven, so that the raceway will be kept full so long as there are tacks in the magazine and all possibility of the tacks becoming clogged in the raceway or at the entrance thereto will be avoided. I accomplish this object by providing a cylindrical tack-magazine within the cylindrical casing of the tool and. by closing the bottom thereof with a cylindrical head, which is fitted into said magazine and connected to the driver, the arrangement being such that the piston-head will lift the tacks up to and deposit them on the raceway, so that they may hang point down therein, and by providing tack-deecting means for preventing clogging of the tacks at the raceway-entrance.

For a more complete understanding of my invention reference is now made to the accompanying drawings, in which- Figure 1 is a side elevation of the completed tool. Fig. 2 is a similar view with the outside casing in'cross-section, showing the main body of the tool. Fig. 3 is a longitudinal section on the line .fr w of Fig. l, showing the parts in the position which they assume just before the tack is driven. Fig. 4 is a similar view showing the position which the parts assume as the driving operation is finished.

Fig. 5 is a detail view, on a larger scale, of the actuating means for the tack-separator. Figs. 6 and 7 are cross-sections on the line y y of Fig. 3, showing the two extreme positions of the tack-separator. Fig. 8 is a cross-section on the line a 2 of Fig. 2. Fig.` 9 is a detail view of the tack-separator. Fig. l() is a longitudinal section of the nozzle on the line o of Fig. 2. Figs. li and l2 are detailviews of the raceway-entrance. Fig. 13 is a central section through the piston-head at its highest and lowest points.

As shown in the drawings, the main body a is of cylindrical form and is centrally and longitudinally bored and has an extension b, with a mouth-piece or nozzle Z2 at the lower end thereof. Said nozzle yhas a longitudinal passage b3 of suiiicient size to permit the passage of a tack and an obliquely-extending tackpassage b4, opening into said passage 3.

A cylindrical casing c surrounds the body a and is snugly iitted thereover, the upper end of said casing c being closed by a cap d. A driver-rod e, having a driver e at its lower end and a handle e2 at its upper end, passes through the body a and is arranged centrally therein, the driver e being fitted to slide in the passage 3 of the nozzle o'.

An obliquely-disposed piston-head f is rigidly secured to the driver-rod e, said head being accurately fitted in a cylindrical chamber a, (hereinafter termed the tack-magazine,) formed in the upper end of the body.

A spring it is interposed between the lower side of the head f and the bottom of the chamthan the thickness thereof. raceway-supporting face c' is formed by cutting a slot through the casing Wheneutting the slot to form face a3, so that said slot and groove exactly register and said faces are on ber a', said Spring acting to throw the driverrod into the position shown in Figs. 2 and 3.

The outer side of the body a is provided with a spirally-extending raceway-groove a2 of greater width than the length of the long-` est tack which will be employed and of greater depth than the diameter of the shanks of the tacks at their heads. One of the racewaysupporting faces a3 is formed by cutting a groove in the body at the upper end of groove a2, which is one-half the diameterof the head of a tack and of awidth somewhat greater The vopposite a level. A portion of the upper end of the body a i is provided with an inclined face a7, which is continuous with the face a3 of the raceway,

and the opposite face c is continued parallel with face a7 by forming a beveled groove c2 `in the casing-that is, the portion of the race- Y way beyond a vertical shoulder ce* on the body is uncovered or the casing above the upper f end of the raceway is recessed-so that tacks may pass into the raceway and be suspended point downward in groove a2. The body a is provlded with a slot or recess a, which extends from the shoulder a distance somel what greater than the length of the tack and of width somewhat greater than the thickness of the tack-body, but less than the diameter of its head, the under side of said slot a being continuous with the face a3.

A tack-delector c3 is rigidly mounted in and projects inwardly from the inner wall of the casing c and preferably consists of a semicylindrical-shaped pin having its fiat side against the shoulder and its end beveled from said flat side to the inner wall ofthe casing. The lower edge or side of said pin is slightly iiattened, (see Fig. 11,) and said surface is arranged at such a distance above the faces a3 c of the raceway that a tack may pass beneath it when the under side of its head rests nearly flat on said faces, as indicated in Fig. ll, but will prevent passage thereof in case the tack should assume any other position-that is, the distance between the under side of the deiiector o3 and the faces a3 c is somewhat greater than the thickness of the head of a tack, but much less than its diameter.

The driver-rod e is provided with a head e3 at the point where the driver e/ is secured thereto, forming a shoulder which engages the lower end of the body a and prevents the spring from moving the head f above aposition which is on a level with the face a7, the inclination of the head corresponding almost exactly to the inclination of the supportingfaces of the open portion of the racewaythat is,Y the faces a7 c.

A tack separator or feeder j (shown in detail in Fig. 9) is arranged transversely of the body a and is adapted to reciprocate longitudinally between a pin (see Figs. 6 and 7) and the rod e. The front end of the separator is provided withtwo prongs j" jg, and a circularv recess f3 is formed between said prongs, the diameter ofwhich is somewhat greater than the heads vof the tacks, the space between said prongsA beyond said opening ja being somewhat less in width than the diameter of the tack-heads, but greater than that of their shanks.

Theshank end of the separator is bent obliquely with relation to the main part thereof,

and a notch j* is formed in said shank in which one end of a U-shaped spring m, having an intermediate coil m', is located, the other end of said spring being located in a recess a in the body, as shown in Fig. 5, and bearing against the inner side of the casing,

thereby acting to advance the prongs of the separator toward the opposite side of the casing'.l A wedge-shaped projection or cam a is secured to the rod e and is adapted to engage the opposite side of the shank of the separator from that which is engaged by the spring m. An extension a of the tack raceway is adapted and arranged to conduct the tacks into the path of the prongs of the separator. A tack-passage b5, one side of which is formed by plate p, leads downwardly through the body extension b into the obliquely-extending passage b4 of the nozzle b.

A pair of tack retaining and centering springs() are secured to the nozzle b and are arranged in the passage 7) thereof, said springs performing their usual function when used in this relation.

The tack-magazine being partly filled with a suitable quantity oftacks upon the upward movement ofy the driver-rod the head f will lift or throw the tacks onto and over the face a7, so that a number of them may fall into the raceway and be suspended by their heads therein upon the faces a7 c in the usual manner, the beveled slot c2 guiding them to an extent into such position. As the face a7 is beveled or inclined down into the magazine and as there is but little opportunity for a tack to lie on the faces a7 c' without having its body fall into the raceway-slot a2 when the head f is moved down with the driver to eject a tack from the nozzle and drive it into the work all, or nearly all, of the tacks which have been thrown into the recess above the raceway-faces will fall back into the magazine, permitting the tacks w'hich are hanging in the raceway to slide down beneath the deflector c3, as illustrated in Figs. 2, 3, and ll.

The particular function of the deflector c3 is to prevent clogging of the tacks at the entrance to the portion of the raceway which is below' the shoulder ai, its rounded surface' preventing the tacks from finding lodgment at this point and defiecting them so that they fall back into the magazine.

It sometimes happens that the tack-body will pass the shoulder@4 point tirst and lie on .the faces a3 0', while its head will be caught between the deiiector c3 and said faces, thus preventing any more tacks from passing into the raceway proper wliileit is in this position.

By providing the slot a9 in the body below the deliector and by providing the defiector c3 with a beveled or tapered end, as before described, the body portion of the tack may readily pass sidewise through said slot, the head sliding readily on the beveled surface of the deflector back into the magazine. v

The lowest portion of the inclined pistonhead f is a short distance below the lower end of the slot a", the open portion of the raceway extending opposite a portion of thehead between itshighest and lowest points, as indicated in Fig. 13, and while the exact position of the head shown with respect to the face al when in its uppermost position is not wholly essential yet I am enabled to secure advantageous results by the particular arrangement shown, for no matter in what position the tool is held the tacks will be lifted to such a point that they will slide or fall upon the open or uncovered portion of the raceway although but few tacks may be left in the magazine, and as in the normal operation of the tool the head f is thrown back quickly and as the tool is often held at an inclination it usually happens that the magazine is completely emptied before the tacks in the raceway have been forced out of the nozzle. As the raceway contains alarge number of tacks, it is quite immaterial whether or not tacks are deposited therein on each reciprocation.

When the spring /L moves the driver-rod to its upper limit, as shown' in Fig. 3, the wedgeshaped projection n engages the tack-separator and draws it back to the dotted position shown in Fig. 6. In this position the prong 3'2 of the separator lies directly across the raceway extension a and prevents further downward movement of the tacks therein. As the driver-rod is forced downwardly to the position shown in Fig. 4 the wedge-shaped projection n will also be moved downwardly, liberating the separator and permitting the spring m to force it into the position shown in Fig. 7. This will cause the prong j' of the separator to pass between the tack which is resting against the prong f2 and the next succeeding tack, so that the latter will be intercepted by the prong j and th'e former will be carried on through the slot between the prongs into the opening f3 of the separator, and then, as it will no longer be supported by the separator, it will drop into the tack-passage ?25 and fall downwardly into the passage 723, where it will be intercepted by the driver, as shown in Fig. 4. When the pressure on the driver-rod is removed, the spring will force the same into the position shown in Fig. 3, permitting the tack which was previously intercepted thereby to fall into passage b3 directly in front of and below the end of the driver, it being then intercepted and supported by the centering-springs o, as shown in Fig. 3, so that when the driver is again forced downwardly its end will engage the head of the tack and force it past the springs 0 into the work. A single tack will thus be fed in front of the driver each time it makes a complete reciprocation so long as there are tacks in the raceway.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A tacking device comprising a casing having a tack-magazine and a tack-raceway formed 1n the walls of the magazine havingv inclined tack-supporting faces, arecess being provided in said walls above the upper portion of the inner raceway-face to permit the tacks to pass thereover into the raceway, a tack-lifter vertically movable in said magazine closely adjacent the portion of the walls thereof directly below said upper portion of said face, and means for operating said lifter, substantially as described.

2. A tacking device comprising a casing having a tack-magazine and a tack-raceway formed in the walls of the magazine having inclined tack-supporting faces, a recess being provided in said walls above the upper portion of the inner raceway-face to permit the tacks to pass thereover into the raceway, a tack-lifter vertically movable in said magazine closely adjacent the portion of the walls thereof directly below said upper portion of said face, the upper side of said lifter being inclined to lcorrespond to the inclination of said face, substantially as described.

3. A tacking device comprising a casing having a tack-magazine extending longitudinally therein, the walls of said magazine being provided with a partially-encircling raceway-slot, and tack-supporting faces at each side thereof, the upper end portion of said slot being in open communication with said magazine above the inner tack-supporting face, and a tack-lifter fitted and reciprocally mounted in said ,magazine and movable therein below the point of communication of said slot therewith, substantially las described.

4. A tacking-tool comprising a cylindrical casing having a longitudinally-extending magazine and a spirally-extending raceway formed in said casing and encircling said magazine, said casing being recessed so that said raceway is in open communication therewith at its upper end, a circular tack-lifter fitted within said chamber and vertically movable therein,-

substantially as described.

5. A tacking-tool comprising a casing having a tack-magazine therein, the walls of said magazine having a tack-passage formed therein and two tack-supporting faces at opposite sides of said passage, the upper end portion of the innermost supporting-face and the inner surface of the magazine-walls intersecting, and said walls being recessed above said face portion to permit a tack to pass from the magazine into said passage, a tack-lifter closing the bottom of said magazine and vertically movable therein below the recess in said walls, substantially as described.

6. A tacking-tool comprising a casing having a tack-magazine therein, the walls of said magazine having a tack-passage formed therein and two tack-supporting faces at opposite sides of said passage, the upper end portion of the innermost supporting-face being beveled at its inner edge and intersecting the inner surface of the magazine-walls, and said walls being recessed above said face portion to permit a tack to pass from the magazine into said passage, a tack-l if ter closing the lower end of said magazine and vertically movable therein, substantially as described.

7. A tacking-tool of the character described, comprising a cylindrical body, a cylindrical casing surrounding said body, a spirally-extending raceway formed between said body and casing, a cylindrical tack-magazine formed in the upper end of said body, and inclosed by said casing, said raceway being partly formed on the upper end of said body and opening into said magazine, a reciprocating d river-rod passing centrally through said magazine, and to close the lower end thereof, and means for automatically lifting said rod and head so that the latter is lifted to positions adjacent the point of open communication between said magazine and raceway, substantially as described.

8. A tacking-tool comprisinga casing hav ing a tack-raceway passage therein and inclined tack-supporting faces at each side thereof, a tack-magazine within said casing, a recess being formed in the walls of said magazine above said faces to permit the tacks to pass from said magazine into said passage, and a tack-deflector at the lower end of said recess closely adjacent said faces and permitting the tacks to pass beneath it when in their correct position, said deflector having' obliquelydisposed faces to deflect misplaced tacks back into the magazine, substantially as described.

9. A tacking-tool comprising a casing having a tack-raceway passage therein and inclined tack-supporting faces at each side thereof, a tack-magazine within said casing, a recess being formed in the walls of said magazine, above said faces to permit the tacks to pass from said magazine into said passage, and a tack-deflector at the lower end of said recess at a distance from the tack-supporting faces less than the diameter of the 4heads of the tacks, substantially as described.

l0. A tacking-tool comprising a casing having a tack-raceway passage therein and inclined tack-supporting faces at each side thereof, a tack-magazine within said casing, a recess being formed in the walls of said magazine above said faces to permit the tacks to pass from said magazine into said passage, and a tack-deflector at the lower end of said recess at a distance from the tack-supporting faces less than the diameter of the heads of the tacks, said casing having a slot at the opposite side of said deflector from said recess, continuous with the inner raceway-face, to permit the shank of a tack to pass laterally therethrough, substantially as described.

11. A tacking-tool comprising a casing having a tack-raceway passage therein and inclined tack-supporting faces at each side thereof, a tack-magazine within said casing, a recess being formed in the walls of said magazine, above said faces, which permits a tack to pass readily from the magazine to the passage at its upper portion, and which is restricted at its lower portion to permit the passage of the shank portion only of the tack, substantially as described.

12. A tacking-tool comprising a casing having a tack-raceway passage therein and inclined tack-supporting faces at each side thereof, a tack-magazine within said casing, a recess being formed in the walls of said magazine, above said faces, which permits a tack to pass readily from the magazine to the passage at its upper portion, and which is restricted at its lower portion to permit the passage of the shank portion only of the tack, and means for restricting said recess, between its upper and lower portion, to an extent less than the diameter of, and greater than the thickness of a tacks head, substantially as described.

13. A tacking-tool comprising a casing having' a tack-raceway passage therein and inclined tack-supporting faces at each side thereof, a tack-magazine within said casing, a recess being formed in the walls of said magazine, above said faces, which permits a tack to pass readily from the magazine to the passage at its upper portion, and which is restricted at its lower portion to permit the passage of the shank portion only of the tack, and an obliquely-disposed tack-deliecting face at the upper end of the lower portion of said recess, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

ARSENE HEBERT. W'tnesses:

LOUIS H. HARRIHAN, H. B. DAVIS.

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