US601942A - Hand nailing apparatus - Google Patents

Description

(No Model.)

M. BROOK. HAND NAILING APPARATUS.

No. 601,942. Patented Apr. 5, 1898.l

l'llilll UNITED STATES'Y v PATENT VOrmes MATTHIAS BROOK, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE CON- SOLIDATED t MOKAY LASTING MACHINE COMPANY, OF PORTLAND,

MAINE.

HAND NA|| |NG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 601,942, dated April 5, 1898. Application led August 14, 1897. Serial No. 648,237. (No model.) V

To all whom t may cori/cern:

Be it known that I, MATTHIAS BROCK, of Boston, county ofSuffolk, State of Massachusetts, have invented an Improvement in Hand Nailing Apparatus, of which the followingdescription, in connection with the accompanying drawings, is a specification, like letters and figures o'n the drawings representing like parts. v This invention relates to nailing apparatus of the type adapted to be held in or carried by one hand of the operator and operated by the other hand/ and commonly known as hand-mailers or hand-tackers; and the object of the invention is to simplify and improve apparatus of this type,particularly with the end in view of rendering the action of the apparatus easier and less liable to be disarranged or broken under customary usage.

The several features of vmy invention will be hereinafter fully set forth inl connection with the accompanying drawings and specification. f

In the drawings, Figure 1 is a side elevation of an apparatus containing'one embodiment of my invention; Fig. 2, a left-hand edge view of Fig. 1; Fig. 3, a partial rear side view of Fig. 1; Fig. 4, a detail of the feed-actuating devices to be described.

Referring to the drawings inY the embodiment of my invention there shown, A indi-V cates a hand piece or case provided with a head A' 5 d, a driver arranged within the case and indicated only by dotted lines, Fig. 3; d2, a driver actuator or carrier having a suitable striking-cap CIG; A6, the nose through which the tacks or fastenings are driven into the Work, and A2 the raceway, all of which may be ofl any suitable or desired constructionsuch, for instance, as shown in Letters Patent of the United States, No. 537,269, issued to me April 9,1895, to which reference may be had for a description of the operation of such parts, although it is to be understood my invention, to be hereinafter described, is not restricted to its use in connection with this particular mechanism, the latter being shown merely as an example of any mechanism of this type to enable my invention to be under- 5o.

stood.

the hopper acting in'any suitable'manner, as

will be understood by those skilled in the art, to 'deliver'the fastenings contained therein to said raceway, through or along which they are delivered to the driving mechanism.

I have herein shown a rotary hopper; .yet it vwill be understood that some parts of my invention may be equally well applied to other forms of hopper or receptacle wherein a rotary movement of somepart is Yemployed directly or indirectly to govern or control the delivery of the fastenings on the raceway leading to the driving mechanism. A

The hopper or receptacle M is shown as provided with a sprocket-wheel 10, which is embraced bya' flexible connection, shown as a sprocket-chain 11, surrounding a sprocketwheel 12, loose on the outer end of a short shaft or arbor 13, upon which said wheel 12 is retained by a suitable nut 14. Fast on this shaft 13, 'immediately behind the Wheel 12, is a pawl-carrier 15, to which is pivoted thepawl 16, maintained by a spring 17 in normal engagement with a series of ratchetteeth 13, upon or secured to the rear side of the sprocket-wheel12, oscillation of the shaft 13 and its pawl-carrier 15 causing the pawl 16 to impartaV step-by-step rotation to the ratchet-Wheel-lS, its sprocket-wheel 12, and

through the chain 11 a corresponding step-bystep rotation to the sprocket-wheel 10 and delivery-controlling means M.

The shaft 13 referred to is provided at its end opposite the pawl-carrier 15 (see Fig. 3)

with a laterally-extended arm 19, acted upon by a spring 20, which maintains the said arm normally pressed against the depending freey IOO \ ble jar or eect upon the actuator.

forces the latter gradually back or to the right, Fig. 3, it in turn acting upon the arm 19 on the shaft 13 to rotate said shaft and actuate the ratchet-wheel 18 and parts controlled thereby, as described` A suitable detent 30 acts to prevent retrograde movement of the ratchet-wheel 18.

It will readily be seen that however sharp or violent the downward or driving movement of the driver actuator or carrier d2 the movement of the feed-lever 2l as it is forced to one side is always gradual, and said lever is consequently relieved of most if not all of any shock or impact received by the actuator, and therefore the feeding movement of the parts described is also relieved of any impact or blow. In this way the feeding devices actuate more easily and with less violence than heretofore. Further than this the feeding movement by the parts described is so gradual, however sharp be the movement of the actuator, that the parts are set in motion and perform their work with no percepti- In other words, the operator in deliveringr the blow upon the actuator feels no jar of the feeding devices as the latter operate in feeding the fastenings. To make this clearer, it may be further stated that in devices of this class as heretofore constructed the feeding devices have been actuated at or about the time of the greatest resistance to the movement of the actuator by the driving of the tack, and to such resistance there is added the further resistance of the feeding devices performing their work, which always gives to the actuator an uneven movement distinctly and injuriously felt by the hand of the operator. In my improved device, however, it will be lnoticed that the feeding movement commences immediately on the descent of the actuator, and the movement of such feeding devices from that time until completed is so gradual that their action is not perceptibly felt by the operator.

I-Ieretofore in devices of this character it has been common to transform the reciprocating movement of the actuator into rotary movement of the feeding devices through the intervention of levers, usually of considerable length, and by reason of their length having considerable movement at their free ends, thus necessitating more or less lost motion between the ends of the levers and the parts actuated thereby to insure certainty of operation without too nice adjustment. This lost motion or looseness causes impacts which are distinctly felt by the operator. In this invention, however, it will be noticed that the reciprocating movement of the actuator is transformed into rotary movement at a point close to the said actuator on the casing A, and a slight reciprocatory movement-as, for instance, that of the feed-lever 2l-is therefore suiiicient to provide the necessary rotary movement-as, for example, of the sprocketwheel 12-thereby reducing the amount of lost motion and correspondingly eliminating the contacts or shocks which would result from the use of parts of greater length and having greater movements with more lost motion. All these features combined give to the device herein described as embodying my invention a smoothnessand an ease of operation heretofore quite unknown in apparatus of this character.

By the use of a flexible connection, as the sprocket-chain I1, for transmitting the motion from the feedactuating device to the actual feed-controlling part, as the part M, a certain vflexibility is had which prevents injury should the apparatus meet with accident, as by dropping upon the floor or otherwise, whereas con necting-levers as heretofore used would very generally be bent, broken, or thrown out of adjustment by a blow that would in no wise injure my present device. The use of the eXible connection also of course renders the device somewhat lighter and greatly simplifies the mechanism, making it cheaper and easier to clean.

In order to maintain the fiexible connection under proper tension at all times, I have herein provided a wheel 25, mounted upon the free end of an arm 26, fulcrumed at 27 on the head of the machine and held. in adjusted position by a set-screw 2S, passed through a slot 29 in the arm referred to and screwed into the said head.

My invention of course is not restricted to the embodiment herein shown, for the same may be varied without departing from the spirit and scope of the invention.

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

IOO

l.` In a hand nailing apparatus, the combination with a driver and a driver-actuator, of means for controlling the supply of nails to said driver, and an endless flexible connection traveling always in one direction interposed between. the said driveractuator and nail-controlling means, and through which the latter is actuated by the former.

2. VIn a hand nailing apparatus, the combination with a driver and a reciprocating actuator therefor, of a loose nail-holding receptacle, means controlling the supply of nails therefrom to said driver, and a exible connection traveling always in one direction interposed between the said driver-actuator and nail-controlling means, and through which the latter is actuated by the former.

3. In a hand nailing apparatus, a reciprocating driver and itsactuator, rotary means located at one side of said driver and more or less removed therefrom, to control the supply of nails to said driver, and means to conduct the nails from said rotary nail-controlling means to said driver, combined with means closely adjacent the said driver and its actuator for transforming the reciprocating movement of the latter into a rotary motion, and connections between such means and said IIC nail-controlling means for operating the latter by or from the former, said connections being independent of said controlling means,

substantially as described.

4. In a hand nailing apparatus, a case containing a reciprocating driver, a driver-actuator, a rotary nail-controlling part carried by said case, and means to conduct the nails` from said nail-controlling part to said driver, combined with means for obtaining a rotary movement by and from the reciprocating movement of said driver or its actuator, and a iiexible connection joining such ymeans with and to rotate said nail-controlling part, said flexible oonnectioribeing independent of said nail-conducting means, substantially as described.

5. In a hand nailing apparatus, a case, a reciprocating driver, its actuator, a rotary feed-controlling part, means to conduct nails therefrom to said driver, and means independent of said nail-conducting means and actuated by said driver and in'cludinga flexible-connection, for transforming a step-by- .step rota-ry movement always in one direc- `tion to said feed-controlling part from said driver or its actuator, substantially as .described. I i' 6. In a hand nailingk apparatus, a case, a reciprocating driver, and its actuator, a wheel journaled on said case, and devices moved by said actuator to impart a step-by-step rotation'to said Wheeha rotary nail-receiving hopper also-mounted on saidcase, and an endless connection joining the same with and to be rotated by said wheel, substantially as described. v

7. In a hand nailing apparatus, a case, a reciprocating driver, and its actuator,a Wheel, and devices to impart a step-by-step movement thereto fromsaid actuator,a rotary feedcontrolling hopper, and a flexible connection j positivelyrotating the same from the said wheel, substantially as described.'

8. In a hand nailing apparatus, a case, a`

' nection, Y whereby hand-operated reciproca--y tion'of the said driver transmits therefrom through the said iiexible connection a rotary movementto the said nail-controlling part.

l0. In a hand nailing apparatus, the combination with a suitable case, anda hand-operated l'driver arranged therein, of a loose nailholding receptacle, a raceway to conduct the loose nails therefrom to driving position'adjacent the said driver, a rotar)T feed-controlling part governing the flow ofthe loose nails to said raceway, and an endless flexible connection interposed between said driver and said rotary nail-controlling part for operating the'latter lbyhand-operated movement of the former. l A v In testimony .whereof I havesigned my name to this specification in the-presence of two subscribing Witnesses.

MATTHIAS BROCK.

Witnesses: v

FREDERICK L. EMERY, LAURAVT. MANrX.

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