US601941A - Solidated - Google Patents

Description

MBROGK NAILING APPARATUS.

A(No Model.)l

Patented'Apr. 5, 18978.

T z noRms'PETERs w, Now um Nrrnn STATES PATENT FFICE.

MATTHIAS BROCK, or BOSTON, MASSACHUSETTS, ASsIeNoR Toy THE coN- SoLIDATnD a MOKAY LASTINGMAOHINE COMPANY',-I on PORTLAND,

MAINE.

NAILINGAPPARATUS.' v

SPECIFICATION forming part of Letters yPatent No. 601,941, dated April 5, 1898.`

Application filed January 1997, Serial No.l6 l9,29 5. (No model.) l Y To LZZ whom it may concern..-

Be it known that L'MATTHIAS BROCK, of.

This invention has for its object to provide io a novel apparatus for driving nails or equivalent fastenings, the invention being especially applicable to apparatus of the class illustrated in Letters Patent ofthe United States No. 537,269, issued to me under date 15 of April 9, 1895, in connection with which I have elected to herein illustrate and describe my invention.

In the apparatus illustratedin my patent above referred to the *nails are delivered to the driver from a suitable raceway or conductor attached to the portable handpiece or case, this raceway having been previously loaded in suitable manner as from a stationary loading apparatus, such as is well known z5 in the art.

My present invention has for one ofits objects toprovide a hand-driver of the class referred'to with an improved receptacle for the nails, which receptacle shall be permanently attached to and movable with the handpiece or case to automatically supply the nails or fastenings to the driver as needed,

thereby obviating the necessity of ceasing work for the replenishing of the raceway from 3 5 a stationary loading apparatus or otherwise.v

In applying to a nailing apparatus of the class above referred to a receptacle containing in bull; the nails which are to be delivered to the driver means must be provided for delivering the nails from the receptacle to the driver or from some position from which they will readily move to the driver.

Prior to my invention in hand nailing ap return movement of the driver. My enperience with apparatus of thisclass has .shownl me that the success of the apparatus depends in a large measure upon the certainty with which the nails are delivered to the driver or into position to be driven bythe latter into the work and that this certainty of deliverance ofthe nails is increased in proportion to. the increase in the number 'of movements of the nail-delivering means. In other words, the oftener the nail-delivering means operates the more certain will it be that a sufficient number of nails or fastenings will be delivtion I employ a nail-receptacle mounted to be rotated step by step in the same direction during not only theA driving but the return movement of the driver, this rotation ofA the receptacle serving to deliver the nails therefrom to a conductor leading to the driver,` al- -though my invention is not to be restricted `positively,'impelling or shooting the fastenlingsendwise down the condnoting-passagel leading to thevdriver.

My invention comprehends other features, to be hereinafter more fully described, and set forth in the claims. Y

In the drawings, Figure 1, in side elevation, shows a nailin g apparatus containing one embodiment of` my invention; Fig.` 2, arpartial rear side elevation of the apparatus shown in Fig. l; Fig. 3, a rear side view of the apparatus shown in Fig. l, with many of the parts broken away and shown in section; Fig-4, a vertical sectional detail taken on the dottedline a: ac, Fig. 2;Fig. 5, opposite face views IOO of the gate to 'be described; Fig. l6, a top or edge'view thereof; Fig. 7, a'perspective detail of one of the guide-blocks controlling the delivery of the nails from the driver; Fig. 8, a detail of the end of the raceway; Fig. 9, a detail illustrating a wiper or clearer for clearing the raceway where the latter leaves the receptacle; Fig. 10, a sectional detail showing the improved means cooperating with the gate for turning the tack or fastening into proper angular position to enable it to enter the conductor leading to the driver, and Fig. ll a detail illustrating one means for positively moving the fastening endwise down the conducting-passage leading to the driver.

Referring to the drawings in theA embodiment of my invention there shown, the hand piece or case A, provided with a head A', the driver cl, arranged within the head, the tubular driver-bar d2, fitted with a cap d6 and containing the spring d3, resting at one end against the said cap and at its opposite end against a pin d4, the swinging gate e5, provided wit-h a shoulder 3, point 4E, the diagonal opening 5, and a notch 7, said gate being mounted upon the short shaft e6, encircled by a spring es, which tends to move the said gate always in one direction opposed by the arm e4 on the shaft e3, controlled by the arm e2, resting against a cam-surface e on the driverbar referred to, are and may be of a construction substantially as shown in my said Patent No. 537,269, to which reference may be had, like letters and figures representing like or equivalent parts, although it should be un derstood that as these parts do not constitute my present invention they may be varied or others substituted therefor without departing from the spirit and scope of this invention.

While the cam-su rface e for controlling the f movement of the gate referred to is arranged and operates upon the parts substantially as .in my former patent referred to, yet in this my present invention I have changed said cam-surface in a manner to be hereinafter pointed out, whereby a result is accomplished which was neither shown nor described in my former patent.

The nail-receptacle M for receiving the nails or other suitable fastenings to be used with the apparatus is suitably mounted upon or connected with a part of the case A, so as to be movable freely therewith, said receptacle, as herein shown, being cylindrical in form and loosely mounted upon the shaft m, held rigidly by a disk m', closing one side of the receptacle and constituting one wall there of, said disk in turn being supported by the raceway A2, attached to the case A.

Upon the exterior of the receptacle M, I have formed a series of ratchet-teeth m2, adapted to be engaged by the pawls m3 m4, the pawl m3 being pivotally mounted upon an arm m5 of a bell-crank lever fulcrumed loosely upon the shaft m, and havingits other arm m6 reaching to the left, Fig. l, into position at the side of the case A, where itis provided with a pin m7, which passes through a curved slot m8 in the case and is suitably connected with the reciprocating' driver or driver-bar Within the case. Fast on the shaft m of the nail-receptacle,

and therefore held rigidly in position, is the upright arm m8, to the upper end of which I have attached at m9V the depending pawlcarrier m10, on the lower free end of which the pawl m4 is carried, said carrier m10 being slotted, as at m11, to receive the shaft m, past which it vibrates, the said pawl-carrier m10 being connected with thearm m5 by a pin m12 on the latter entering the slot m13 in the former.

It will be evident that as the driver is driven downwardly to drive a nail the bell crank lever m5 m6 will be swung to the left,

Fig. l, causing the pawl m3 to drag loosely over the ratchet-teeth of the receptacle, the pin lm12 on the arm 'm5, however, throwing the pawl-carrier m10 also to the left, Fig. 10, causing its pawl m4 to engage one of the teeth of the ratchet and rotate the receptacle one step in the direction of the arrow thereon. Return or rising movement of the driver moves the bell-crank lever in an opposite direction, causing its pawl m3 to engage one of the teeth of the ratchet and move said receptacle a step farther in the same direction as before, the pawl m4, however, during this movement dragging loosely over the teeth of the ratchet. It will thus be seen that the receptacle is rotated intermittently or step by step always in the same direction at each downward and also at each upwardmovement of the driver,

thereby doubling the number of steps or.

its interior with a plurality of buckets n,

(shown in outline in dotted lines, Fig. 3,) which as the receptacle is rotated, as described, pick up the nails or fastenin gs which gravitate to the bottom of the receptacle and carry the same in greater orv less quantity to the top 4of the receptacle, where they are dumped or deposited upon an inclined table n', secured to the stationary disk or wall m of the receptacle or to the raceway A2, lying at `the side of the said disk or wall, said inclined table causing the fastenings deposited thereupon to slide laterally out from the receptacle into the trough n2 in the raceway A2, the points or shanks of the nails or fastenings dropping into the trough, where they are supported by their heads resting upon the side walls of said trough or raceway.

The inclined table n' is shown as having itsv lower end rolled or turned upwardly, as at nx, to better direct the flow of tacks laterally therefrom.

\ Such tacks or fastenings as are not properly .deposited in the trough of the raceway A2 are "dropped therefrom into the cup o, secured to the outer side of the stationary wall of the receptacle, said cup having an inclined bottom to deflect the fastenings dropped thereinto back through an opening o (see Fig. 3) again into the receptacle.

The cup 0 is shown providedv with 'a cover 02, hingedat o3 to the cupand acted upon'by a spring o4, arranged to hold said cover in either its fully opened or closed position. To prevent any fastenings which rest on the top of the raceway getting into the opening in the wall of the cup through which said raceway passes to the driver, and thereby stopping the downflow ofthe fastenings, Ihave herein provided a clearer, shown in the form of va thin metal plate 20, Figs. 3 and `9,'overlying the raceway and removed from the top ofthe latter just sufficient to enable the heads of the properlypositioned tacks'orfastenings to pass thereunder down the raceway, said plate p being attached to and carried by an arnrp'-, pivoted at p2 to the stationary side Wall ofthe receptacle, said arm being provided with a pin p3, arranged in the path of movement of the ratchet-teeth of the receptacle, so that at each step-by-step-movement ofthe latter one of the teeth of the ratchet 'will engage Vthe pin pif and .move the .armpV 'outwardly away from the cup to 'Withdraw somewhat the shield or clearer p, permitting the latter to snap quickly back under the Vaction of the spring p4, Fig. 2, as the said pin p3 clears the toothV which moved it, due to the eccentricity of the axes about which the ratchet-teeth and the said arm respectively move. This sharp or quick vibration. of the clearer p hereintakes place at each niovementof the receptacle-that is, ateach downward andcach upward move'- ment ofthe driver-and acts'to effectually clear the raceway of any loose tacks/or fastenings which Ymay chance to fall thereupon out of proper position to drop into the trough of the raceway. Forthe best results I provide the clearer p' with downwardly-extended Vears p5 at opposite sides ofthe raceway to better clear thelatterof any fastenings which may lie crosswisethereof. 1 v v 1 Referring particularly kto Figs. l, 3, 5, and l0, the fastenings or tacks'deposited inthe racewayor conductor A2 descend therein by gravity, supported by their. headsl resting upon the side walls of the conductor, the lowermost tack or fastening resting in the pocket formed by the lug 3 ofthe gate e5, which crosses the raceway. Immediately above the raceway A2, I have arranged a fastener-impelling device for, impelling ory shooting the fastening from the end ofthe conductor into the passage leading therefrom to the Ldriver, said device acting quickly andpositivel-y to put the fastener into position to .be acted upon by the driver, such action beingfar more certain than depending upon gravity to fit the fastening into position to be struck byy the driver. This impelling device, as. I have chosenherein toillustrate the same, is rep-:f resented as a lever r', Fig. 1, pivoted'on the raceway at r and actedupon' by a spring r2, which presses said lever normally into its lowermost position, with the shoulder or downturned end r3 at its free end lying in the path of movement of the heads of the tacks inthe raceway, such shoulder or downturned end r3 being preferably concaved at-its face next the tacks in the raceway to better rece-ive and hold the head of a tack, as will be described. l As the driver is moved downwardly `within the caseA and withinthe nose A6, depending from said case, the cam -surface e on the `driver-bar moves the arm e4 outwardly and permits the spring e8 to move theV gate e5 across the end of the raceway, thereby causing the point 4 of the said gate to engage the lowermost tack of the series, which tack was previously held inthe pocket referred `to and by the diagonal face leading to said point 4 force the said'tack in the direction of the driver, said point at the same time entering between said lowermost andthe rest of theseries of tacks to hold back the series until the return of Vthe gate, when anew tack will slip intothe pocket.l As the lowermost tack referred to is pressed forward by the diagonal face of the gate its head will meet the conycaved shoulder rg on the lever rv and will be retarded or stopped thereby in its movement,

l the said diagonal face, however, by its continued movement acting upon the shank of the 1 tack'to press the said shank to the left, Figs.

l and 2, causing the tack to assume -a diagonal position, as shown in Fig. 1Q, with its `point directed v away from the moving gate, Where it cannot be caught by the zlatter, in any of its movements, and more nearlyin a linewith the chute'd, into which it isy to be discharged. The head of .the tack is thus held, as shown in Fig'. l0, until the pressureA of the diagonal face of the gate, tending Vby its actiononithe shank to push it to the left, exceeds ythe resisting power of the spring r2, holding the lever r inposition in front of the head of the tack, when said spring r2 will yield and permit'the said lever and shoulder to rise and clear the headof .the tack; VThe* lower or shouldered end of said lever r may be provided with what may be called a hamnier-face (rx, preferably flat, extended be` yond the front or concaved edge of said shoulder, so that as the tack, under the action of vthe gate, lifts and clears said shoulder the return-of the lever to its normal position will cause the said hammer-face to strike the head of the tack to irnpel or positively start the same down the chute and to thedriver. This insures certainty of feed or delivery of the tacks tothe driver.

As the driver. rises for the neXtoperat-ion A this tack d rops into the driver-passage into position between the two blocks w w, arranged at opposite sides of the driver-passage and' held in yielding contact one against the other ,fjpy a suitable spring w', (shown best in Fig. 1,) Xsaid guide-blocks acting to properlycenter `thetack or fastening within the driver-pasroo IIO

driver in its further descent and be driven from the nose into the work.

It will be noted that in my apparatus as herein shown and described the cam-face e is provided with an initial incline ew, followed by a relatively long dwell c and a final incline @12, or said cam-face is otherwise shaped or connected with the gate e to cause an initial movement of the gate to pick out orseparate a tack from the series in the-raceway, then cause a relatively long dwell to give the tack so separated full opportunity to center or position itself in readiness for final ejection and feeding,and, finally, j ust before the driver has finished its movement and after the driverpassage has been absolutely cleared of tacks the gate is given a final movement to free the tack from its holding-shoulder and drive the latter down the chute to the driver-passage. This is of great importance, for it holds a tack from being dropped into the chute (t until after the tack previously dropped therein has been Ipractically ejected from the apparatus, thereby effectually preventing two or more tacks entering together the driver -passage and clogging the machine, which would be possible if the gate were actuated early enough to permit a partial descent of the driver by accident or otherwise to liberate a second tack before the first one had been driven or ejected from the apparatus. The arrangement described is also important, for so far as I am aware it for the first time gives a dwell or. period of rest between the commencement and the end of the tack separating or feeding movement, which herein is a movement in one direction, in which said tack can position itself for final and accurate feed to the driver or tacker.

My invention is not limited to the particular embodiment herein shown and described, for the same may be varied without departing from the spirit and scope of my invention.

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

l. A freely-portable hand-supported and hand-operated nailing apparatus containing in combination a casing adapted to be carried by the hand; a fastening-receptacle mounted on said casing a reciprocatinghand-operable driver and nail or fastening feeding means connected with and deriving feeding movement from said driver, said feeding means and connections between the same and driver moving without change in direction during movement of said driver in any one direction, movement of said driverin opposite directions causing effective movement of said feeding means always in the same direction, substantially as described.

2. In a machine of the class described, the combination with a reciprocating driver, of a fastening-receptacle, and intermittingly-operated means acting always in the same direction to deliver fastenings from the said re- -ceptacle for the said driver,'and said means being actuated by said driver during movement of the latter in one and also in an opposite direction, substantially as described.

3. A freely-portable hand-supported and hand-operated nailing apparatus containing in combination a casing adapted to `be carried by the hand, a reciprocating hand-operable driver, and a rotatable fastening-receptacle, both mounted on said casing and devices actuated by said driver to impart relatively slow and easy step-by-step rotation t0 said receptacle both on and during substantially the entire driving and on the return movement of said driver, substantially as described.

4. In a nailing apparatus of the class described, a reciprocating driver, a casing, a rotatable fastening-receptacle on said casing and provided interiorly with means to lift the contained nails,nailconducting means to convey nails from said receptacle to said driver and means actuated by said driver to impart rotation to said receptacle during both the driving and also during the return movement of said driver said means tending to move said receptacle in but one direction during movement of said driver in either direction.

5. The combination with the driver,the casing, a rotatable receptacle and means to impart step-by-step rotation thereto from said driver during the driving and also during the return movement of the latter and a clearer arranged over and clearing the properly-positioned fastenings on said conductor and connecting devices intermediate said rotatable receptacle and said clearer for communicating to the latter a vibrating motion by and fromstep-by-'step rotation of the said receptacle.

6. lhe combination with the driver and its case, of a conductor to convey fastenings to` the said driver, a spring-controlled fastenerimpelling device, having a stop-surface to engage the head of a fastening from said conductor, and means acting upon the shank of the fastening to move the latter into inclined position while its head is yet engaged by said stop-surface, said impelling device being actuated to release the fastening-head when the pressure upon the shank reaches a predetermined degree, substantially as described.

7. The combination with the driver,its case, and the conductor leading to the-driver, of a yielding pivoted controller having a stop-surface and means engaging a fastening to press the head of such fastening against such stopsurface first to position the fastening and then to turn said controller on its said pivot to free said fastening substantially as described.

8. In a machine of the class described, the combination with a driver, and a fasteningconductor leading thereto, means for controlling t-he passage of fastenings toward said driver, said means being constructed to furnish a dwell intermediate the beginning and IOO IIO

the end of 'its movement in one direction in .which a fastening can assume proper position for iinal and accurate movement, substantially as described.

9. In a machine of the class described., the' combination with a driver and apfasteningconductor leading thereto, of a fastening separating and feeding gatehaving a 'fastening-V separating point'to separate a fasteningfrom a series of .fastenings, and 'means to impart to said gate an initial movement -to cause its said pointto Vseparate afastening, and a n'al fastening-feeding movement in the same direction assaidi'nitial movement but separated from said initial movement by aperiodY of dwell, substantially as described.

lO. The combination with a fastening-conductor, of a single means to actupon a fastening in said conductor and move the said fastening into a new position to hold said fas. tening in its said new position so as to enable the said fastening to be positioned with certainty for a subsequent movement, andto finally impart such subsequent movement to said fastening, substantially as described. A

l1. In a machine of the class described, a driver and means to convey the fastenings toward said driver, said means holding one' driver, combined with means to act upon a fastening so positioned to impel the said fastening endwise into,V the .-path'traversed by said driver, substantially as described.

12.,V In a machine of the class described, the combination with a driver and a fasteningconductcrleading thereto, of means to feed the fastening singly toward said driver, and a yielding impelling device to act upon and retard the movement of the head of a fasten'- ing, a face of, saidimpe'lling device acting as ahammer to positively impel a fastening so retarded toward said driver, substantially as described. v A s j 13. In a fastening-drivingapparatus, aconductor to receive and ,guide fastenings, a driver, a fastening-passa'ge'in communication therewith and a springactuated impelling device to act on a fastening at the 'endof said conductor and shootsaid fastening endwise into said fastening-passage to be in position to be acted upon by said driver, substantially as described.

In," testimony whereof vI have signed my name tothis specification in the presence of two subscribing witnesses. .y

. MATTHIAS BROOK. i Witnesses: f

FREDERICK L. EMERY, MARGARET A. DUNN. Y

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