US1747842A - Calking or tamping tool - Google Patents

Description

Patented Feb. 18, 1930 PATENT OFFICE:

JOHN E, PHILLIPS, OF NEW YORK, N. Y.

CALKING R TAMPING TOOL lApplication filed December 9, 1927. Serial No. 238,987.v

This invention reates to'hammering Vand calking devices and inparticular toA onein which a rotary motion of a handle is translated into a reciprocating, pounding motion at the hammer end thereof. r

A particular object of thefinventionis to provide a hammering and callring tool which can be positioned adjacent the point to be hammered or calked and which will-carry on the pounding action very much more rapidly than has heretofore been obtainable manually.

A still further particular object of the in-` vention is to provide a simplified tool ofthe character described which can be accurately positioned to carry on the tamping or pounding at the point desired which will be of light construction, easily portable and can be used at a point where no outside source of power `20YV such, for instance, as electric current is avail- To enable others skilled in the art tofully k comprehend the'underlying lfeatures of: my invention that they mayembody the same in the various modifications in structure and relation contemplated, a drawing depicting a preferred form has been annexed as a part'of '35 this disclosure and in such drawing, similar reference characters i denote corresponding parts throughout all the views, of which,

'i Figure 1 is a view in longitudinal'sectionu of a device constructed in accordance with my invention, the hammer portion thereof being clearly illustrated -inA the v position it would occupy preparatoryto having a striking action, the mechanism for, causing vthe striking actionbeing clearly shown.

Figure 2 is a view in side elevation' of the device as it would appear in use, the housing and handle therefor being clearly shown.

Figure 3 is an enlarged section, taken on the line 3-3 of Figure 2 and shows the gear op-- 50. erating-mechanismA for lcausing retractionA of the hammer member and the method of causing Aoperation of said gear members, and

Figure 4 is a view in side elevation of the modified form of hammering device showing howl an electric motor may be applied thereto and also showing a dierent form of handle and hammer head used in connection with the device. l

. Referring to the drawings lin detail, 5 indicates the frame of my improved hammeror callring device which consists of the side pieces 6 and circular portions 7, the end ones 8 of which form closures for the-device and at their centers provide` journals fora plunger 9'which will be hereinafter more specitcal- 65 ly referred to.

Intermediate the ends 8 of the frame, there is provided other journals 10 and 11 which are cast integral with theframe andthe former of which provides an additionaljournal for the plunger 9 while the latter provides journals which are in alignment with journals formed in the end piece 8 for guide rods 12, whose purpose will be hereinafter described. The frame 5 adjacent its rear-end is provided 75 with the' upstanding journal ,extensionc13, there being provided for the purpose of strengthening the same, integrally cast ribs 14, these ribs preferably extending the length of the frame 5 in order to strengthen the 80 t same,-the journals 13 supporting suitable gear shafts' 14 therebetween upon whichismounted for free rotation, the annular gear 15, which gear,'as is well understood, istoothed on its inner face and theteeth are adapted to mesh with la suitable driving pinion 16, carried on a stub-shaft 17 which is journaled in one of the upstanding journal membersll. The outer end of the shaft 17 is engaged by an operating handle or crank 18 which is suitably secured 90 thereto through the medium of a locking screwf19 and it will be'quite evident that rotation of the handle will cause rotation vof the pinion 16 to in turn cause rotation of the annular gear 15. This gear is cast to provide on its outer circumferential face, the spaced sprocket-like projection 20, the purpose of which isto successively engage an extension 21 formed integrally on a collarl 22 whichis adjustablys'ecured,through themedium of 10 a set screw 23 to the plunger 9, the plunger, as before noted, is journalled in the members 8 and 10 and has free sliding movement therein. Adjacent the forward closure member 8, the plunger carries a collar 24 which is adjustably secured thereto through the medium of the set screw 25, the collar forming a'seat for one end of a coil compression spring 26, which surrounds the plunger 9 and abuts at its opposite end, against one side of the journal member 10.

The plunger at its eXtreme forward end is threaded as at 27 and carries the hammer or calking head 28, so arranged that its point is adapted to strike a blow in direct alignment with the end of the housing.

The frame, as before mentioned, is provided with journal members 11 and with an end closure 8, which also constitutes journals for depression or guide rods 12 and these rods are provided with fixed collars 29 between the journal members 11 and 8l and are surrounded by the springs 30 so that their outer ends, which are blunted or headed as at 31 to provide rests and are held in yieldable relation to the end of the casing or device and it is quite evident that they provide a yieldable rest whereby the device may be positioned on the side of a wall or boat or a calking or pounding operation, thereby supporting the end of the device in proper relation to the point to be operated upon.

The frame 5 is covered withI a suitable casing 32 of substantially cylindrical formation,

vthe same being provided with a suitable cutout as at 33, which is closed'by the gear housing 34, the latter being provided with the flanges 35 and being secured in `any manner to the casing 32 to form a complete closure for the operating arts of the device.

The operation o the device is carried on as follows; revolving manipulation of the handle 18 causes as heretofore described, the rotation of the pinion 16, which, infturn,re volves the gear 15 and causes the sprocket 20 to engage the projection 21 of the collar 22 which is secured to the plunger 9, thus drawing back the plunger against the tension of the spring 26 until the particular sprocket, in engagement with the projection 21 has disengaged the same, thereby allowing it to jump forward, the spring of course, causing this jumping motion and projecting the hammer head 28 against the surface to be operated upon. It is quite evident that continuous motionf of the handle 18 will cause a vibratory hammering motion of the hammer head and rapid succession of taps on the surface or object to be hammered will complete the hammering operation with a minimum of time and effort on the part of the operator.

In order to facilitate the handling of the device, I have secured to the casing 32 as by the screws 36, the handle 37 which may be `made of'tubular stock as shown in Figure v3,

so that a firm grip thereon may be had, whereby the device may be positioned as shown in Figure l against the surface to be pounded. Y

In Figure 4, I have shown a slightly modified form of hammering or calking tool which contemplates use in the reverse position from that shown in Figure 2, but employs the same mechanism and operates the pinion 16 from a source of motive power, such as an electric motor 38,- the driving of the pinion shaft being carriedon through the medium of a flexible shaft 39 which connects the motor 38 with the gear 16 and allows both hands of the operator to grip the handles 40 and 41 provided for that purpose, the latter being positioned on the gear housing 34 while the former is positioned adjacent the front of the casing 32. In this instance, also, I have provided on the end of the plunger 9, a different form of hammer head 42, although it is to be understood that any form of hammer head may be used which will conveniently thread on the end of the plunger 9 or be held thereon in any other suitable manner.

It is quite evident, therefore, that I have provided a combined hammering and calking tool which may be used in cramped positions and where it is'impossible to obtain a source of motive power.

It is also evident that I have provided a manually operated calking and hammeringv tool which will carry on the work of pounding faster and more accurately than could be accomplished by the individual with a hammerin g or calking chisel. n

' It is also evident that I have provided a device of the character referred to which is simple of construction has few parts, cannot get out of order'readily and will effectively carry on the work for which it is designed.

It is also noted that a devicehas been provided which may be positioned against the work and which maybe moved toward and away from the point to be hammered to increase the force of the blows by shortening the distance through which the hammer operates, thereby increasing the speed of the blows and, in a measure, limiting the power delivered thereby.

While I have illustrated and described my invention with some degree of particularity, I realize that in practice various alterations therein may be made. I therefore reserve the right and privilege of changing the form of the details of construction or otherwise altering the arrangement of the correlated parts `without departing from the spirit of the invention or the scope of the appended claims.

` Having thus described my invention, what I claim as new and desire to secure by United States Letters Patent is 1. A hammering tool comprising a frame, a plunger therein, a` tool head carried by the plunger, a spring for normally urging the plunger forward and means for successively retracting the plunger and releasing the same to provide a hammering stroke, and depressible guide rods positioned on the front of said frame and constituting a rest for the tool during use thereof.

2. A tool of the character described, comprising a frame, a plunger, slidably mounted therein, a collar having an extended portion adjustably secured to the plunger, a spring for normally urging said plunger forward, a tool head on the end of said plunger, an annular gear in said frame having projections on the periphery thereof for engagement With said extended collar portion for causing reciprocation of said plunger, a pinion for operating said gear, a casing for said frame, a handle on said casing, and depressible guide rods positioned at the front of said frame and constituting a rest for the tool during use thereof.

In testimony whereof I aiix my signature.

JOHN E. PHILLIPS. [1.. s]

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