US2125653A - Scraping tool - Google Patents

Description

L. SEGUIN 2,125,653

sRAPING TooL j Filed Feb. a', 1937 Allg. 2, 1938.

Jny'eni'or 20j/d Tuin fM/BT `clean, bright inner surface on the same.

Patented Aug. 2, 1938` UNITEDISTATES PATENT oFFicE SCRAPING TOOL Lloyd Seguin, Merrill, Wins. Application February 8, 1937, Serial No. 124,641

4 Claims.

. xed binding nuts mounted thereon, are often corroded and covered with an electrically nonconductive lm which prevents making a good electricalconnection or contact between the exposed surface of the fixed binding nut and the lead wire or conductor which is electrically connected thereto. Heretofore the customary practice amongtelephone linemen has beenrto scrape the lm or accumulation of corroded material off from the exposed surface of the fixed binding nut by means` of a screw driver or analogous tool, this being accomplished by first loosening the lock nuts and washer 'of the binding post assembly and then scrapingthe inner or exposed surface of the fixed binding nut so as to provide a However, this is a somewhat difficult and laborious task and it is difficult, with an ordinary tool, such as a screw driver, to scrape the inner or exposed surface of the fixed binding post nutclean enough to form a good bright surface on the same and thus effect a good electrical connection between the inner or exposed surface of the fixed binding post nut and the'lead wire or conductor which is in contact therewith. This is especially important in connection with telephone work, because the absence of a good electrical connection will cause undesirableV noises in the telephone receiver. However, good electrical connections are, of course, equally important and desirable in other types of electrical work, and hence the new tool is of general use and application. Y

Another and major object of the present invention, therefore, is to provide a scraping tool or scrap-er by the use of which the above-mentioned and other difliculties experienced in the use of the prior art tools, such as screw drivers and the like, are eliminated'.

An additional major object of thepresent invention is to provide a simple, inexpensive, and efficient scraping tool for removing the film or corrosion from the exposed surfaces of fixed binding post nuts or other analogous electrical. parts, so `as to provide a clean, bright surface thereon and thus enable the workman to form a good electrical connectionbetween the same and the lead wires or other analogous conductors which are electrically connected thereto.

Other objects will` appear hereinafter. The invention consists in the novel combination and arrangement of parts to be hereinafter A described and claimed.

The inventionwill be best understood by reference to theaccompanying drawing showing the preferred form of construction, and in which:

Fig. 1 is a perspective View showing a typical embodiment of` the new scraping tool;

Fig. 2 is a side elevational view of the scraping tool` which, is shown in Fig. 1 and illustrating how the same is used for cleaning the exposed or inner surface of a fixed binding post nut;

Fig. 3 is a fragmentary `longitudinal sectional View ofthe scraping tool which is shown vin Figs. l and 2 and is taken on line 3-3 in Fig. 2;

Fig. Il is a View partly, in section and partly in elevation, showing one manner of mounting the body of the tool in the handle of the same; and

Fig. 5 is a transverse sectional view illustrating the construction and formation of the scraping jaws of the new scraping tool and also showing the arrangement of the cross bar or stop which extends between the scraping jawsat the axially inner ends of the same.

A typical embodimentof the new scraping tool or binding post scraper is shown in the drawing, is therein generally indicated at It), and comprises a handle ll, which is shown as being cylindrical but may be of any other suitable design and shape, and to which is attached, in any suitable manner a scraping jaw member, which is generally indicated at I2.`

The scraping jaw member I2 is preferably formed asu one piece of metal, for which a good grade of slightly resilient steel is well suited, and comprises a pairlof complementary and spaced arms or members I3 and VI Vwhich include shank or attaching portions I5 and i6, respectively, and these. shank portions l5 and It may be attached to ,and anchored in the handle Il in any suitable manner, as, for example, in the manner which is illustrated in Figs. 3 and e.

The arm I3 of the member I 2 includes, or has formed thereon, at its axially outer end, a scraping jaw or lip ll', and the arm le includes or has formed thereon, at its axially outer end, a correspondin'giand complementary scrapingjaw or lip I8. The jaw member I2 also includes a cross bar or stop I9 which extends between, and bridges, the arms I3 and I4 of the same, immediately above the scraping jaws II and I8, that is, at the axially inner ends of the latter; this cross bar I9 being preferably formed integrally with the arms I3 and I4 and acting both as a bridge and stop, in a manner to be described hereinafter.

In orderbetter to illustrate the use of the new scraping tool or binding post scraper a` conventional binding post assembly is shown in full lirios in Fig. 2 of the drawing, (and in dotted lines, Fig. 4), and is shown, for the purpose of illustration, as including a binding post 2!) which is mounted on a block or support 2|. The binding post assembly also includes a fixed binding post nut 26 and lock nuts 22 and 23 which are threadedly mounted on the binding post 20, together with suitable washers 24 and 25.

In the use of the new scraping tool or binding post scraper the same is arranged in position of use on the binding post 2l] by loosening, that is, partially unscrewing, the movable lock nuts 22 and 23 and the washers 24 and 25, then retracting or withdrawing the washer 24 from its normal position, in engagement with the fixed binding nut 25, toward the nut 23, so as to expose the inner surface of they fixed binding nut 26. f The scraping jaws I'I and I8 are then slipped onto the body of the binding post 20, between the washer 24 and the fixed binding nut 26, so that thek binding post 2E) is received between the jaws Il and I8, as shown in Figs. 2 and 4; it being noted that for this purpose the scraping jaws Il and I 8 are preferably made slightly resilient or yieldable so that they will spread slightly when inserted onto the binding post 20, as indicated in Fig. 4, and. will thus frictionally grip the external surface of the binding post 20. It will also be noted, in this connection, (Fig. 4) that when the scraping jaws Il and I8 are in their normal position (as in full lines, Fig. 4) the space between the same is slightly less than the diameter of the binding post 20. It will further be noted, that the cross bar or stop I 9 is offset, that is, it is located at one side of the longitudinal or axial center of the tool so that when the scraping jaws Il and IS are inserted onto the binding post 2!) they will be stopped, in embracing relationship relative to the binding post 20, by engagement of the cross bar or stop I9 with the said binding post 20, and the latter and the lock nuts 22 and 23 and the washers 24 and 25 arranged thereon will then be disposed between the arms I3 .and I4 of the member I2. The scraping jaws I 'I and I8 are also preferably made slightly yieldable axially of the tool so that they will yield slightly when pressure is applied upon the tool axially thereof (downwardly as seen in Figs. 2 and 4) during the scraping operation which will be described presently.

Accordingly, in order to complete the operation of scraping the inner or exposed surface of the fixed binding nut 2B, and which it is the principal object of the present invention to accomplish, the new scraping tool IU, being arranged in the position described above and as shown in Figs. 2 and 4, is then moved in an oscillatory twisting movement, about its long axis, during which operation the scraping jaws or lips Il and I8 will frictonally engage and bear against the exposed or inner surface of the fixed binding nut 25, thereby removing from the latter, as well as from the external surface of the binding post 2!) itself, the corrosion or iilm accumulated thereon, thus providing a clean, bright surface on the same and enabling the workman to make a good electrical connection or contact between the exposed surface of the fixed binding nut 2G and the lead wire or conductor which is in contact therewith, as well as between the binding post 20 and the conductor, and thereby eliminating the noises caused, in the case of telephone work, by a poor electrical connection between the lead wire and the exposed surface of the fixed binding nut, as well as between the binding post and the conductor.

It will thus be seen that the present invention provides a new binding post scraper or scraping tool by the use of which the exposed or inner surfaces of the fixed binding nuts in telephone binding post assemblies, as well as other electrical terminals may be scraped clean to provide a good bright surface and a good electrical contact in a quick, efficient, and time and labor-saving manner, and without the use of such inefficient tools, for this purpose, as screw drivers and the like.

It is to be noted that while the new tool has been described and illustrated as being especially adapted for use by telephone linemen in scraping clean the exposed or inner surfaces of the fixed binding nuts of telephone binding post assemblies, as well as the external and corroded surfaces of the binding posts themselves, it may also be used in the electrical arts in general wherever it may be desired to scrape from the corroded surface of a binding post or analogous terminal or part the lm which has accumulated thereon due to corrosion or oxidation, so as to provide a clean bright surface and a correspondingly good electrical contact between the fixed binding post nut or other part and the conductor which is electrically connected thereto.

It will also be noted that the member I2 and the scraping jaws or lips I'I and I8 may be made in various sizes so as to accommodate the new tool for use in cleaning the inner or exposed surfaces of the fixed binding nuts of binding post assemblies or other analogous electrical terminals or parts of various sizes and diameters.

It is also tobe noted in connection with the new scraping tool that the same may be used to accomplish its intended object and purpose without removing the lock nuts 22 and 23 and the washers 24 and 25 from the binding post 25 since during the scraping operation the lock nuts 22 and 23, the washers 24 and 25, and the binding post 2@ of the assembly are disposed between the arms I3 and I4 of the member I2 and it is merely necessary to loosen or partially unscrew the lock nuts 22 and 23 and the washers 24 and 25 in order to effect the operation of scraping the inner or Y not only acts as a stop to engage the binding post 20 and thus center the scraping jaws Il and I8 on the binding post 2B, and relative to the fixed binding nut 26, when the same are inserted thereon but it also acts as a bridge between the two arms I3 and I4 to prevent the latter from being spread apart and in the use of the tool it engages the lower surface of the washer 24 during the scraping operation .and thus prevents the tool from being pulled off from the binding post 2B during the scraping operation since if it were not for the cross bar or stop I9 any pull which might be exerted by the operator on the handle (upwardly, Fig. 2, outwardly, in actual practice) during the scraping operation, would cause the scraping jaws or lips I'I and I8 to spread apart and pass over the lock nuts 22 and 23 and washers 24 and 25 and off from the binding post 26. This is, however, prevented by the cross bar or stop I9 since when the operator moves the scraping jaws I 'I and I 8 axially along the binding post 2l] (upwardly, Fig. 2) the cross bar I9 will engage the lower washer 24 and thus prevent the jaws II and IB from spreading and passing over the lock nuts 22 and 23 and washers 24 and 25 and olf from the binding post 20.

It is to be observed that while the binding post assembly is shown in Figs. 2 and 4 as being disposed in a vertical position this has been done solely for the purpose of illustration since in actual practice the binding post assembly is disposed horizontally, that is, with the long axis of the binding post 20 extending horizontally rather than vertically as shown in the drawing, so that the new tool I when in use will generally be arranged in a horizontal position with the scraping jaws or lips I'I and I8 bearing'against the exposed inner surface of the fixed binding nut 26, and being forced against the same, by a slight pressure of the operator so as more effectively to perform the intended scraping operation.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification, without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to protect by Letters Patent is:

1. A scraping tool comprising a handle and a pair of spaced and substantially parallel members carried thereby each having a scraping jaw formed thereon at its outer end and said jaws being cooperable with and spaced from each other to receive therebetween a member having thereon an object to be scraped, said tool including a cross bar or bridge formed integrally with and extending between the said first-named members at one lateral side of said jaws and adjacent the outer ends of said members.

2. A scraping tool comprising a member including a pair of spaced and substantially parallel arms each having a scraping jaw formed thereon at its outer end said member including a cross bar immovably mounted on and extending between the said arms at one lateral side of the said scraping jaws and adjacent the outer ends of said arms.

3. A scraping tool comprising a member having a handle and including a pair of spaced and substantially parallel arms each having a slightly yieldable or resilient scraping jaw formed thereon at its outer end and said scraping jaws being cooperable with each other .and having a space therebetween for the reception of a member having thereon an object to be scraped, said firstnamed member including a cross bar formed integrally with and extending between the said arms at one lateral side of the said scraping jaws.

4. A scraping tool comprising a member having a handle and including a pair of spaced and substantially parallel arms each having a scraping jaw formed thereon at its outer end and said scraping jaws being cooperable with each other and having a space therebetween for the reception of a member having thereon an object to be scraped, said first-named member including a cross bar immovably mounted on and extending between the said arms at one lateral side of the said scraping jaws and adjacent the outer ends of the said arms.

LLOYD SEGUIN.

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