US1254911A - Scraper for film-splicing machines. - Google Patents

Description

A. s. HOWELL. SCRAPER FOR FILM SPLICING MACHINES.

Patented Jan. 29,1918..

2 shears-sue l- APPLICATION FILED NOV. 2?, I916.

Ed? SHOLUQZZ/ A. S. HOWELL.

SCRAPER FOR FILM SPLICING MACHINES.

0o 1 Hz T 9H mm n w .mz m a P I APPLICATION FILED NOV. 27. I916.

w M.T IQ w w M W 3 W QMQKi/"SEOLU QZZ/ UNITED STATES PATENT OFFICE. f

ALBERT s. HOWELL, or CHICAGO, ILLINOIS, ASSIGNOR To BELL & HOWELL commit-Y,

OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SCRAPER FOR FILM-SPLICING MACHINES.

Application filed November 27, 1916. Serial No. 133,771.

citizen ofthe United States, and a resident employing special tools.

of the city of Chicago, county of Cook, and State of Illinois,'have invented certain new and useful Improvements in Scrapers for Film-Splicing Machines, of which the following is a specification. v

My invention relates to film splicing machines and more particularly to an acces sory for operation in conjunction with the splicing machine, and consists in providing a device adapted to hold a scraper blade 1n proper position to be drawn across the edges of the film to be spliced so as to remove aportion of the edges of the film and slightly bevel the same in order to make a flat splice.

One of the objects of my invention is the provision of ascraping device that is well adapted for performing the functions for which it is designed. Other objects are the provision ofa scraping device that is easy to handle and will not readily-get out of order; that is simple in construction and comparatively inexpensive to manufacture; and that is capable of use u on machines already in use without alterlng the same or 'I prefer to accomplish of my invention by substantially the means and in the manner hereinafter fully described and as more particularly pointed out in the claims, reference being had to the accompanying drawings forming a part of this specification, wherein, 1

Figure 1 is a top plan of the clamping or holding jaws of a film splicing machine in holder and showing the details ofits construction, and Fig.

is a vertical edge view of th1s tool,

Specification of Letters Patent.

the divers objects Patented Fig. 8' is a plan view of a fragment of film after being spliced.

Fig. 9 is an exaggerated view of the ends of a film, showing the manner of making the splice after the scraping operation. 7

Referring particular y to Figs. 1 and 2 of the drawings, it will be observed that the splicer preferably comprises two pairs of -'coacting clamping jaws, each pair of jaws being adapted to receive and hold one end of the film to-be spliced. One set of jaws comprises upper and lower members A and B that are adapted to receive the' end 'X of the film, and the other pair of jaws comprises similar upper and lower members 0 and D between which the other end Y of i the film is held, said end .Y being adapted to be superimposed upon the end X when the splice is made.

The members A and D are provided with elongated bars a and '03, respectively, that extend beyond the front and rear of said members, and cooperating with these bars are suitable horizontally extended plates a and d that provide a guide for the shoulder or flange of the scraper, as will be hereinafter more fully described. As seen in the drawings (Fig. 2) the member A is shorter than member B, thereby providing an extended shelf or shoulder upon which the end of the film rests, and thesarne is true with respect'to members C and D and the disposition of the jaws is such that the edges of members A and O are in'alinement with each other, as are the corresponding edges of members B and D. This permits Jan. 29, 1918.

the two sets or pairs to be moved toward each other and shear the extended edges of the film ends so that they will overlap a predetermined distancewhen spliced. This short width of film is the width of the splice and my scraper is adapted to operate upon it while it is held .by'thc clamping jaws.

My scraper is illustrated in detail in Figs. 3, 4: and 5 of-the drawings and preferably comprises an elongated block 10, having a portion of one edge cut away along one side so that a longitudinal flange 11 is provided, that is adapted to operate in the guide on the members A and D, heretofore mentioned.- The opposite lon'gitudinalsideof block 10 has a turned-back spring arm or extension 12, that is preferably spaced away to provide an open longitudinal slot 13, extending substantially the length of said spring arm, and vertically disposed facing grooves 14 and 15 are formed respectively in the opposing surfaces of the block and arm, to provide means for mounting the scraping tool 16 therein. This tool consists of a relatively thin strip of spring metal of rectangular shape, and has its opposite lower surfaces beveled at an angle of approximately seven degrees (7) to form a blunt chisel end thereon, as shown at 17 in Figs. 6 and 7 of the drawings. A bolt or screw 18 provided with a knurled head extended through the arm 12 and is tapped into the adjacent facing portion of the block so as to tighten the arm against the tool 16 and lock the same in position, thus avoiding the accidental removal thereof.

I have found it expedient to bevel the portions of the film that overlap when the splice is vmade, as shown in exaggerated scale in Fig. 9 of the drawings, and in order to accomplish this successfully and quickly, I prefer to incline or tilt the tool 16 laterally away from the block 10 at an angle of substantially four degrees (M). This may be. done by beveling the faces of the block and arm and cutting the grooves 14 and 15 parallel thereto, as shown in Fig. .5 of the drawings, or by respectively increasing and diminishing the depths of the grooves '14 and 15 from their tops toward their'bottoms, or in any other suitable manner. 7

In operation, after the ends of the film to be spliced have been clamped between their respective" jaws, the upper set or air is lowered and the respective ends of t e film are sheared at the points indicated by the arrows c and b. The jaws C and D are 'then elevated and the flange 11 of the scraper is placed in either of the guides formed by the members a and a or members (Z and a? of the respective sets of jaws,

' which will dispose .the tool 16 in proper as shown in Fig. 4, will scrape 0E and bevel theend of the film so that a flat overlapped position on the film, as shown. A rapid movement of the scraper back and forth .joint or splice without ridges may be made. After the film has been suficiently scraped,

.a suitable cement is applied and the upper set of jaws is againlowered to press the overlapped ends together, which causes them to tightly adhere to each other and will flatten out the splice as will be obvious.

While I have herein illustrated and described certain specific means for carrying out my invention, it, of course, will be obvious to others skilled in this art, that divers-modifications thereof are possible with ,my invention. I therefore desire it understood that all such changes are contemplated as included within the scope of my invention as expressed in the appended claims.

What I claim is:

1. The combination with a film-splicing machine provided with two pairs of clampmg members, each pair adapted to receive one end of the film to be spliced, each pair of said members provided with a shoulder upon which the end of the film to be spliced rests and having a guideway parallel thereto, of a scraper consisting of a member ,provided with means engaging and operable in elther guideway, and a blade carried by said member adapted to operate upon the portion of the film resting upon said shoulder.

2. The combination with a film-splicing machine provided with two pairs of clamplng members, each pair adapted to receive of said members provided with a shoulder upon which the end of the film to be spliced rests and having a guideway parallel thereto, of a scraper consisting of a member rov1ded with means engaging and operab e in either guideway, a blade mounted on said member, and means removably securing said blade in position, said blade adapted to operate upon the portion of the film resting upon said shoulder.

3. The combination with a film-splicing machine provided with two pairs of clampmg members, each pair adapted to receive one end of the film to be spliced, each pair of said members provided with a shoulder upon which the end of the film to be spliced rests and having a guideway parallel thereto, of a scraper consisting of a member provided with means engaging and operable in said guideway, and a blade carried by either member and tilted with respect there to and adapted to operate upon the portion of the film resting upon said shoulder.

4. The combination with a film-splicing machine provided with clamping members adapted to receive one end of the film to he spliced said members provided with a shoulder upon which theend to be spliced rests and having a guideway parallel thereto, of a scraper consistin of a block provided with one end of the film to be spliced, each pair a spring arm para lel and adjacent thereto,

spliced said members provided with a shoulder upon which the end to be spliced rests and having a guideway parallel thereto, of

a s raper consisting of a block provided new With a spring .arm parallel and adjacent thereto, a blade carried between said arm and block, means for securing said blade in position, and a flange along-the opposite side of said block engaging and operable in the guideway of said clamping members.

6. A scraper for film-splicing machines comprising a suitably shaped block, an arm disposed parallel and adjacent thereto, a blade inserted between said block and arm, a clamping bolt engaging said arm and tappedinto said block, and a guide flange disposed longitudinally upon the side of said .block opposite said arm.

7. A scraper for film-splicing machines comprising a suitably shaped block, an arm disposed parallel and adjacent thereto, said arm and block provided with facing grooves, a blade, inserted in said grooves, a clamping bolt extended through said arm and engaging said block, and a guide flange disposed longitudinally upon the sidevof said block opposite said arm.

Signed at Chicago county of Cook and State of Illinois, this 16th day of November, 1916.

ALBERT S. HOWELL, Witnesses: I

E. K. LUNDY, Jr., I H. SLACK.

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