US1787866A - Finishing tool - Google Patents

Description

Jan 6, 1931. .'w. c. JONES FINISHING TooL Filed Aug. 8, 1929 I In ventrzqrV Z/Zzm fone-YM a a 7/ www i ...Mmmm nuro 7 f w, l Attorneyl Patented Jan. Y6, 17931 wUII C JONES, 0F OAKLAND; CALIFORNIA i." n f FINISHING TOOL n Application led August 8, 1929.` Serial No. 384,407.

This invention relates to an improved tool or instrument which is especially designed for use by persons generally known in the trade as furniture finishers, and it has particular reference to the species of tool'which is employed for heating andv melting wax, to fill up crevices, blemishes,` and other demolished looking spots on the surface ofthe furniture. 7

10 Briefly stated, the invention has particular reference to ay simplified instrument comprising an especially constructed handle and f an especially designed blade including electrical means for heating the point of the i blade as desired, in order to enable it to be manipulated in a satisfactory manner vfor melting the `wax or other finishing material generally used for patch up work.

More specifically stated, I have evolved and produced a simple and inexpensive tool 'which may be employed in a dependable manner and with great facility and efficiency for the purpose stated, wherein the same includes a handle having a Vdouble arrange-` mentof switches; namely'y a `main control or cut out switch, and an automatic spring opened switch for intermittent use,`together with an appropriately shaped bladeV to accomplish the work constructed to accommodate an electrical heating element, at the point of the blade. v j y @ther features and advantages will become more readily apparent vfrom the.l following description and drawings.

In the drawings: Figure l is an elevational view, partly broken away, showing a tool constructed in accordance with the invention.

through the same.

Figure 3 is a transverse section throughv The'V reference numeral `5 designates generally the handle, which may be of any appro'- `priate material and col'ifiguration, the same preferably including a bod portion 6 and a separable endV portion 7. t the juncture of Figure 2 is a central longitudinal section plan view of one of the From for the push-pull pin 12, having-'an insu ated portion 13 andhandle, together with a head 14 of electrcityconducting material. This constitutes the A,Inovablepart of the switch and is cooperable Vwith the spring contact fingers 15.. .Thus the current may be turned yon `orfoffas desired@ The cable'is arranged Within the handle, to provide av heat-ing element as at 16, Vthis beingconfinedbetween the pointed ends of the sections 1'( andi 18 of the curvate blade V19, and so arranged therebetween asto vconcentrate theheatat the point of the blade'. bladelis of appropriate ,material and preferably comprises sections of thecrosssection kshown better'in 1 Figure. 7The section y17 isfof generally rectangular'crosssection, and has bevelled longitudinal edges 20. hesection 18 is. of4 externalfconveX configuration; These sections arel fastened together by asuitable fastening in the nature of, a screw. 21, Thereference Vcharacter 22 designates anY insulating bush-L ing within thehandle which accommodates y the shank portion of vthe blade, while the ref y@rence Vcharacter 23 designates the operators k'control switch. `This lcomprises an kappropriate casing2etfor the contact (not shown) normally a positionl V.to,hg ld the switch open andnthe operator, merely presses the button in when it is desiredl to keepithe heat ingelement 16 in operation. This allows the` .degree of heatatthis point of the vblade to be controlled at will. This doubleswitch arrangement makes the tool ,quite advantageous .y the foregoinguit will be seen that the invention .resides 1n the-provision of'.l an electrically heated knife, capable for ,use by 1 variousl tradesmen, such as form fbuildersand y others,whereafknife of this character would be founduseful, and that a further advantage `and a spring ypush button 25;4 The button is Cfr" of a knife of this nature, is in the provision of the blade so constructed, that the filament 1G is located in the actual tip of the point of the knife to directly heat the point of the knife, rather than some other portion of the knife which results in the actual tip being heated only by conduct-ion or radiation which is the customary practice. Directly heating the point of the blade obviates the danger of the handle of the knife becoming heated, since the heat as before pointed out is confined in the tip of the blade.

Furthermore, the blade of this knife, as described and illustrated, is so constructed that one may perform very delicate work of the finest quality, even when in the hands of the unskilled. y

The particular arrangement of thev blade, that Ais the flattened curvate construction as well as the longitudinal curvature is'such as to enable `the work to be carried on expeditiously and in an efficient and dependable manner.l The advantages, use and other features will be quite clear to persons skilled in the art after considering the invention in connection with the drawings. Therefore, a

WILLIAM C. JONES.

more lengthy description is believed ,to be unnecessary. v

'Minor changes in shape, size and re-arrangement of parts' vcoming within the field of invention claimed may be resorted to, in actual practice, if desired. V

I claim: n v n 1. In a structure of the class described, a

I handle of uniform cylindrical form, an insulating bushing in said handle, a curvate sectional blade having a shank portion mounted in said bushing, saidblade being composed of a Hat faced longitudinally curved inner section, and a convex longitudinally curved out er section; anda grip operated switch of the spring and button type adapted to be inter mittently operated and mounted in the lower wall of the handle, near one end, and a push and pull type of current out out switch mechanism, forming a closure inthe other end'of the handle,ytogether with electrical conduit in said handle and embedded in said blade, a relatively small electrical heating element embedded in the neck of said blade for heating and maintaining the tip portion of the blade at the desired temperature immediately controlled by said intermittent Vgrip operated push button switch.

2. In a finishing toolof the class described, a handle, a curved blade, plano-con`veir in cross section and having a rounded tapering tip and electrical heating means confined to the eXtreme point portion of said blade.

3. In a finishing tool of the class described, a handle, electrical 4conduits in said handle, a

blade, electrical conduits inserted in the blade, and inf'circuit with the conduits with the handle, said blade being 'curved and provided with a pointede'xtremit'y, and elec-

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