US1485413A - Nail driver - Google Patents

Description

March 4 1924. 1,485,413

' O. J- JOHANSON NAIL DRIVER Filed Nov. 6, 1922 Olof d. Johanson www h Paienied Maag, 1924.

N ITED STA-rss OIIE' J'. JOEANSUN, OF BOSTON, 'MASSACHUSETIS NAIL Darm;

Application filed November 6, 1922. Serial No. 599,270.

To all whom it may concern.:

Be it known that I, Onor J. JoHANsoN, a subject of the King of Sweden, and resident of Boston, county of Suffolk, State of Massachusetts. have invented 'an Improvement in Nail' Drivers, of whichthe following description, in connection withthe accompanying drawing, is a specification, like characters onthe drawing representing like parts. A

This invention relates to implements for driving nails and has for some of its 0bjects to provide a h'and implement for this Durpose which embodies novel means for transferring the nails from the reservoir to the chute by which the are conductedy to the driving element an also to provide a novel construction by which after the driver has begun its'nail-driving movement it can be returned to normal position' until after completing such movement thus insuring that e'ach nail will be completel driven.

My device comprises the usua frame having a driving element, a chute for conducting the nails thereto, a nail reservoir, and means for transferring the Anails from the reservoir to the chute. The means employed for this purpose is a magnetic element constructed so that it can be moved into position so that one or more nails from the reservoir will be attracted thereto, and may also be moved into position to deliver -the nails to the chute. The nails are dislodged from the magnetic element by delivering to the latter a blow of suflicient force to jar the nails loose therefrom. This blow is herein delivered by providing an abutment against which the magnetic element strikes during its movement. A

In order to give an 'understanding of the invention I have illustrated in the drawings a selected embodiment thereof which will now be described after which the novel features will be pointed outin the appended claims.

Fig. 1 is a vertical sectional viewr through a nail driver embodying my in vention.

Fig. 2 is a detail view showing the means i for .controlling the driver.

The device herein shown comprises a suitable fiame 1 having a handle 2 by which it may be manipulated and moved over the surface 3 into which the nails are to be driven. The embodiment of the invention herein shown is specially designed for nail-y ing flooring in lplace but I wish it 'under- 'i stood that the invention is adapted for various other purposes and is 'not confined to any particular nailing operation.

The driving element by which the nails are driven comprises a driver 4 which is secured to a plunger 5 that operates in a v 'ding sleeve 6 supported at one-'end o Vthe frame. This `driveris normally held in',

raised position shown in Fig. 1 by means of a spring 7 which encircles the shank. 5

and bears at one end against a shoulder 8- formed on the shank and at the other end against a. tubular member 9 situated 'within the sleeve 6. Situated beneath the driver 4 is a guiding member 10 which is herein shown as adapted to reston the surface 3 and `which thereby forms al -support for the frame, and which is also provided with a nail-delivery passage 11 -situated directly in line with the driver 4 and through which the nails 12 are driven. The upper end of the shank 5 is provided with aha'ndle orhiob 13 by which the driver may be manually depressed. A

The nails 12 are delivered to the ldriver through the medium of a chute 14 that may have any suitable or usual construction, said f chute having the usual nail-receiving slot 15 through which .the nails depend, thereby holding said nails in upright position.

The guiding member 10 is shown as having a positioning spring 16 associated 'therewith, which forms a stop for the end nail,

12 and thus holds said nail in ition to bel acted upon bythe driver 4. is springis shaped to engage underneath the ,head of the nail and thus hold the nail suspended until said nail is engaged by the-I driver. The spring 16 yields as the driver descends thus allowing the nailto 'pass .downwardly through the passageway '11.-

, i7 indicates a reservoir to @nain nails,

such. reservoiri'having a cover 18 through which the nails may be de ited therein;

For transferring the na' from the reser- 17 will be attracted thereto and is also adapted to be carried into a position to deliver such nails into the upper end of the chute 14. In the construction herein shown this yloo wir 17 to the chum i4 i have provided a magnetic element is mounted 0n an .arm 20 that is pivoted to the frame at 21, said arm operating through, a slot 22 formed in -the housing for the reservoir 17.

' lthe reservoir Means are provided for manually moving the magnetic element 19 whenever ,it is desiredto reload the chute and while various devices for this purpose'may be employed that herein illustrated is regarded as being entirelysatisfactory., The arm 20 is pivotally mougted by being made' fast on a rock shaft 21 andthe latter has fast thereto an arm 23 which is connected -by a link 24 to one arm 25 -of an elbow lever pivoted to the frame at 26, the other arm 27 of said' elbow lever being yconnected by a link 28 to one endf29 of a Atrigger or linger piece 30 which in turn. is pivoted tothe frame at 31. The arm 20 is acted upon by a spring 32 which tends to hold the magnetic elementnetic member back into the full line position Fig. 1 and said member will-carry with 1t the nalls which have been attracted there- O .The strength of the spring 32;is .Such that 1t Wlll bring the magnetic element against the stop33 with a hammer-like blow and vcated in the drawings.'l

this blow will be suiiicient tov dislodge from said magnetic element-:the nails which are magnetically. held thereto, such" nails fallinginto the upper end of the chute as indi The chute 14 is of the usual shape so that nails which fall into itwill naturally drop into a position where they will. depend through the slot 1521s shown. The loading of the chute, therefore, involves the act'o 56 ing it and this mayv be` done one Vor moref raising the linger lever 30 and Jthen releasf times as necessary to'deliver `the desired number of nails into the chute.

The finger piece 30 is situated beneath' the handle 2 and is thus in convenient position to be manipulated" by the fore nger of the operator.

An important feature of this invention is the construction by which the magnetic ele- `ment Vwith the nails adhering thereto is brought up against the stop or rest 33 with a hammer-likelblow thereby jarring -the nails'from said element.

While l lhave herein shown a' tion which the blow which 'jars thel'nai-ls `ron'i the magnetic element is secured by driving said element against a fixed. stop meenam yet the invention is not necessarily limited to such construction as the blow for dislodging the nailsfrom the magnetic element may be derived by some other means.

Another -feature of the invention relates to the means for controlling the driver whereby after the driver has once been The pin 3i .carries a springmember 38A which is slightly longer than the width oi the slot between the serrated walls but is shorter than the widened portions 37 of theD slot. When the driver is in its elevated. position the spring member38 occupies the widened upper end of the slot as shown in Fig. 2. As the driver starts downwardly said member is carried into the narrower portion of the slot having the serrated edges 36 and as it passes into said portion of the slot the ends of the sprin are bent backwardly or upwardly, as s own by dotted lines Fig. 2. This spring when in this position functions as a ratchet to prevent return. movement of the plunger 5, said spring, however, permitting continued downward. movement. When the 'plunger has completedit's .downward stroke the spring passes in to the lower widenedend 37 of the slot and when in this position it resumes its straight shape. The plunger may then be elevated .and as it rises the ends of the s ring '-element. willbebent downwardly an will function" as a ratchet to prevent downward movement .of the plunger while permitting continuedupward movement thereof.

With this device, therefore, the direction of the movement of the plunger can only be reversed when the plunger is at either started on its nail-driving movement it canend of its .stroke and, therefore, if during 'i epressed osition and cannot be raised un.

til it is given another blow to drive it to the lower limit of its movement. Such added blow will complete the driving of the nail .and thus with this arrangement the complete driving of every nail is insured. While I have illustrated herein a selected embodiment of my invention I do not wish. to be limited to the constructional feature@ shown. I claim:

1. In a nail-driving implement, the combination with a driving element, of a reseri voir, a nail chute leading to the driving ele- '.ment and means for transferring nails from the reservoir to the chute, said means com- IBS prisin a. magnetic element, means to move said e ement into position to take nails from the reservoir by magnetic attraction, and means to give said element a blow sueient to dislodge the nails therefrom.

` 2. In a. nail driver, the-combination with a driving element, of a. reservoir, a nail chute leading to the driving element and means for transferring nails from the reservoir to the chute, said means comprisin a magnetic element, means to move said e ement into position to take nails from the res. ervoir by magnetic attraction and then to move said element into the chute, and a stop for arrestin suddenly the movement of themagnetie e ement therebyto dislodge the nails therefrom.

3. In a nail driver, the combination with a driving eiement, of a reservoir, a nail chute leading to the driving element and means for transferring nails from the reservoir to the chute, said means comprising a pivotally-mounted magnetic element, means for moving said element into position to take nails from the reservior by tic atto' tact mid element,

traction, a ,y and a @op to arrest suddeni the retraing creby the maiis movement of mid element w will be ja therefro f d. a nail driver, the combination with a guiding sleeve,'of a langer operating therein, a driver carrie by the plur, said sleeve having a slot which presents widened ends, a projection extendirg n said plunger and -operatingin the ot and a spring ratchet member carried by the projection and located in said slot, said spring member having a. greater width of the slot but less length than the widened ends of the slot, whereby as the spring member is carried intothe narrow portion of the slot by the downward move?V ment of the. plu 1 y. the ends of the spring are bent backwa nI ry and thereby' lookin the plunger against nward movement unti the plunger has comp eted its downward movement.

in testimony whereof, l have signed my name to thissition.

length than the

Images