US947728A - Method of feeding plates or sheets to cold rolls. - Google Patents

Description

unirTnD STATES PATENT CHARLES W. BRAY, OI? PITTSBURG, PENSYLVANIA, ASSIGNOR T0 AMERICAN SHEET @a TIN PLATE COMPANY, 0F PITTSBURG, PENNSYLVANIA, A CORPORATION QF NEW JERSEY.

METHOD OIF FEEDING PLATES 0R SHEETS TO COLD ROLLS.

Specification of Letters Patent.

Application fned November 1s, 1505. seriali No. asses?.

To all whom 'it may concern: a

Be it known that I, CHARLES W'. BRAY, of Pittsburg, Allegheny county, Pennsylvania, have invented a new and useful Method of Feeding Plates or Sheets to Cold Rolls, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 isa plan view, partly in section, showing an apparatus for carrying out my method;` and Fig. 2 is an end view.

Plates or sheets are fed to cold rolls by boys or other operators, who, although they become skilled in the operation, frequently feed a plate or sheet before the preceding one has left the rolls. rIhis causes a lap of the platesifor sheets which results in waste.

My invention-is designed to' prevent lapping, and the waste resulting therefrom, and to avoid the entering of a plate or sheet in the nip of the rlls, until the preceding plate or sheet has left such rolls. To this end there is provided feeding rolls, normally driven at a slowerperipheral speed than the coldiolls, but arranged to be moved at thesame speed when a plate or sheet is pulled therethrough by the cold-rolls. By means of this arrangement, if a plate is fed. to the feed rolls before a preceding plate has left them, the latter is drawn out of the feed- 1 lrolls by the cold-rolls, and the following sheet, owing to the slower speed of the feedrolls, is not liable `to reach the cold-rolls until the preceding sheet has left them.

In the drawings, 2, 2 designate a pair of cold-rolls, mounted in the housings, 3, and driven in the usual, or in any suitable manner.

4 and 5 designate two feed-rolls,` placed one above the other in front of the cold-rolls, and rotatably mounted in suitable bearings 6 on the housings One of the rolls,-1n the present case the lower one -is positively rotated by a drivin connection preferably a belt connection with a shaft `8,

andthe shafts of the two rolls are interg geared as indicated at 9. The shaft S'isrotated either by a chain'gear connection 10 with the coupling boX on one of the coldroll shafts, or by--any suitable gear, at such speed that the peripheral speed of the rolls il. and 5 will be less than the peripheral speed of the cold-rolls. The driving connection for Jthe shaft 8 is preferably made through a suitable clutch 11, 11a, whose clutch. faces are formed as shown, to permit the clutch member 11a, which is secured to the shaft 8, to slip on the clutch member 11 in one direction of rotation.

l2 designates guides for the sheets or plates which preferably extend through the rolls 4 Patented Jan. 25, i910.

and 5, to admit which the rolls are either out i away, or are made in sections secured to a carrying shaft.

The distance between the rolls@ and 5, and the nip of the cold-rolls is less than the length of a plate or sheet, whereby the sheet will be caught by the cold-rolls, before it overlap each other, I preferably use yielding bearings 13 forone of the rolls, in this case the upper roll 4, This allows the feed rolls to yield. as theoverlapping portions pass through.

Having thus described the invention,what i I claim and desire to secure by Letters-Patent iszf The herein described method which con sists in feeding plates singly and successively to Working rolls between a pair of feed rolls driven at a less peripheral rate of speed than the working rolls and spaced from said working rollsless than the length of a single lsheet, the feed rolls being `rotated at a greater rate of speed than their `normal rate when engaging a plate which is gripped by both the feed rolls and the working rolls, whereby successive plates will .be separated and prevented from being lap-ro`lled should they'become lapped in the feed rolls.

In testnnony whereof, I have hereunto set 100

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