US 917407 A
Description (OCR text may contain errors)
DEVICE FOR STRETOHING IRON BANDS 0F PACKING GASES,
APPLIOATION FILED JULY 20, 1908.
i S I 1 Palaented Apr. 6
THE "07m: Pzrnis ca. wnsnmnran. o. c.
EUGENE BLAUVAO, OF PARIS, FRANCE.
DEVICE FOR STRETOHTNG- IRON BANDS OF PACKING-CASES.
Specification of Letters Patent.
Patented April 6, 1909.
Application filed July 20, 1908. Serial No. 4%,524.
To all whom it may concern:
Be it known that l, Ens-nun BLAUVAC, citizen of the French Republic, residing Paris, in the Department of the Seine, France, have invented certain ne v and useful Improvements in Devices for Stretching; the Iron Bands of Paclrirmfiases, of which the following is it specification.
This invention refers to an improved apperatus for stretching the iron bends, wires or the like generally employed for closing packing cases.
This invention depends on mechanically drawing together in any suitable manner two carriages running on rollers or the like. These carriages are guided by one or more guides or slides and may, if desired, run on rails; each otthese carriages is titted with it suitable device for catching hold of on end of the iron bend, wire or means employed for closing the case. i h chanically drawn toward each other by any suitable means and as examples the eccompanying' drawings show two modifications of an arrangement, but it must be clearly und erstood. that these arrangements permitting of eftecting the desired result may be varied in many ways without in any we y changing the fundamental principle of the invention which essentially consists in the application oi rollers for the stretching carriages.
Figure 1 of the drawing; annexed to the present description shows a. side view ol :1. stretching device with oppositely threaded screw. Fig. 2 is :1 plan view of the some. Fig. 3 shows at side view of a modification with springs.
Referring to the accompanying d rawing's, 1 indicates the curri ges, 2 the rollers, 3 the guides for the car QIGS, 4 the frame, 5 the oppositely thre ed screw, 6 the spring; in the modification, 7 the socket maintaining the pin 8 on which the spring 6 is wound, which pin is controlled by :t lever, l'ly wheel or other suitable means, 9 the square or rectenguler shaped part for opera ting the screw 5. 10 the arrangement for catching hold of the ends of the band irons 11.
As already referred to above, the example The cerria 'es cen be meshown in Figs. 1 and 2 shows on oppositelyt:
threaded screw which can be rotated by means of a nut :irrrene'ed between the two screw threads, or in any other suitable manner by means of a fly wheel, lever or suitable gear.
Fig. 3 shows modification in which the carriages drawn toward each other by means of springs or metal blades, but cables, chains, cords or the like may be substituted for the some. These springs, blades or the like ere attached by one of their ends to tho carriages end by the other end to the pivot and wind on to the pivot or )in 8 like on to a winch, es in the known stretching devices. The carriages may also be provided with springs 12 r the like for drawing them back into their initial position otter having been operated.
The two ends of the bend iron being brought into contact with each other, one above th other, are joined together by means of rivets or other suitable means; it will. be easily understood that e. stretching; device thus constructed, when placed on a crise'permits of uniformly tightening up the iron bond, is more easily operated and gives a better result than the known sppsretus, owing to the presence of any suitable number of rollers under the carriages provided with the devices for seizing the band.
(llaim An apparatus l orstretchinrz or tightening; iron bends comprising a p. of blocks each having at pair of rollers extending transversely across its bottom face near the edge or corner thereof, means on each block to receive the end of the band to be tightened, a. comperrt tively light flexible frame for guiding said blocks in movement toward end from one another, and means for positively impelling said blocks toward one another when desired.
in testimony woereof l alliX signature in presence of two witnesses.
EUGENE B LAUVAC.
LnornN Cnnsrnv, CHARLES DILIL.