Improvements in Machines for Cutting or Slitting Tin Plate or other Metallic Sheets into Blanks.
Year: 1891

page_text: Date of Application, 17th Mar., 1891
Complete Specification Left, 1st Dec., 1891-Accepted, 23rd Jan., 1892
PROVISIONAL SPECIFICATION.
[Communicated from abroad by JOHN GEORGE HODGSON, of Maywood, State of
Illinois, United States of America, Manufacturer.]
Improvements in Machines for Cutting or Slitting Tin Plate or
other Metallic Sheets into Blanks.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent
Agents, 45 Southampton Buildings in the County of Middlesex do hereby
declare the nature of this invention to be as follows:-
My invention relates to machines for cutting or slitting tin plate or other
metallic sheets into blanks for cans or for other purposes.
In the machine embodying my invention a series of upper and lower rotary
cutters are employed, and the sheet is slit or cut into blanks by passing between
them. Upper and lower spring bridges or guides extend between the cutters to
support and guide the sheet to prevent it from buckling and to strip the slitted
blanks from the upper and lower rotary cutters.
The sheet is fed or forced
between the upper and lower spring bridges or guides by a feed slide which is
reciprocated on the feed table by a cross head which projects through a slot in the
table. As the rear edge of the sheet or slitted blank issues from the rotary cutters
their front edge is caught by a pair of blank delivery rolls, the position of which
may be adjusted to or from the rotary cutters to correspond to the length of the
sheet or blanks passing through machine. The feed slide is likewise adjustably
connected to its operating cross head so that the position of the feed slide in
respect to the rotary cutters may be adjusted to correspond to the length of the
sheet to be fed thereto. The blank delivery rolls draw the blanks through the
machine and from the grasp or bite of the spring bridges or guides. To permit
the rotary cutters to be adjusted closer together to compensate for their wearing
and grinding away, the boxes or journals for the shaft of the upper series of rotary
cutters are mounted adjustably in slotted standards attached to the frame of the
machine, and the shafts of the rotary cutters are geared together through a pair of
intermediate gears. The blank delivery table is located between the rotary
cutters and the blank delivery rolls to support and guide the blanks as they
issue. This delivery table, as well as the blank delivery rolls, is made vertically
adjustable.
11
1
CAL
1001
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Machines for Outting or Slitting Tin Plate or
other Metallic Sheets into Blanks.
I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & Co. Patent
Agents 45 Southampton Buildings, in the County of Middlesex, do hereby
declare the nature of this invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement :-
'My invention relates to machines for cutting or slitting tin plate or other
metallic sheets into blanks for cans or for other purposes.
My invention consists in the novel devices and novel combinations of parts

page_text: and devices herein shown and described, and more particularly pointed out in
the claims.
In the accompanying drawing, which forms a part of this Specification, and in
which similar letters of reference indicate like parts,
Figure 1 is a side elevation of a machine embodying my invention;
Figure 2 is a rear view and
Figure 3 is a plan view.
In said drawing A represents the frame of the machine. The frame A is
furnished with slotted standards A¹ to receive the boxes or journals 6' of the
shafts B B which carry the series of rotary cutters C C. To permit the
shafts B B to be adjusted closer together from time to time as required, to
compensate for the wearing and grinding away of the rotary cutters C C₁, the
boxes b of the shaft B are made vertically adjustable in the slotted standards A¹.
This adjustment is effected by means of the threaded screws and nuts 62 3. To
permit this necessary vertical adjustment of the upper shaft B the gears B2 B³ on
the shafts B B', are made considerably less in diameter than the distance between
the shafts B B', and the shafts are geared together through a pair of intermediate
gears B B, which are journaled in suitable bearings or boxes on the brackets or
arms A attached to the standards A¹
D D' are the upper and lower spring bridges or guides which extend through
the machine and under and between the cutters C C and C₁ C¹ to support and
guide the sheet and prevent it from buckling under the action of the cutters.
These guides or supports D D' for the sheet, also serve to smooth and flatten out
the sheet as it passes under and between the cutters, and to strip the slitted blanks
from between the cutters. The guides or supports D D' also serve to cause the
sheet to pass squarely and smoothly through the machine.
E is the feed table. Mounted upon this table is a reciprocating slide or
feeder F, having a back gage fand a side gage f¹ for the back edge and one of
the side edges of the sheet to fit against. This feeder or slide F serves to auto-
matically feed the sheets squarely and uniformly between the upper and lower
cutters CC, and the upper and lower spring bridges or guides D D¹.
By combining this automatic reciprocating feed slide F, having the square back
and side gages ff1 for the edges of the sheet to abut against, with the rotary
cutters C C and the spring bridges, supports or guides D D', between which the
sheet passes, I am enabled to insure the uniform, straight and square feeding of
the sheets to the cutters, notwithstanding the resistance offered to the feeding of
the sheet by the bite or friction of the upper and lower spring bridges or
guides D D. The feed slide F is operated automatically by a cross head G, which.
reciprocates in suitable guides g on the feed table E, and which is actuated by a
pitman or link G' connected at one end to the cross head and at the other to an
arm G2 on the rock shaft G³, which is connected by the pivoted link or pitman G
with the wheel or disk G' on the shaft B¹. The cross head G projects through
a slot e in the feed table E, and is furnished with an arm g¹ to which the feed
slide F is connected adjustably by set screws f³ which pass through slotted arms f¹
attached to the feed slide F.
His the receiving table or platform upon which the slotted blanks are received
as they issue from the rotary cutters C'C', and which serve to support and guide
the blanks as they issue. This receiving table H is supported upon an adjustable
standard H' secured in the socket H2 by a set screw h. The socket H is itself
longitudinally adjustable on the horizontal arm H³ to which it is fixed by a set
screw h¹.
KK are the blank delivery rolls which engage the front edge of the slitted
blanks just as the rear edge of the blanks leave the rotary cutters C C¹. These
blank delivery rolls when thus combined with the rotary cutters and the spring
gages or supports D D', serve to pull or deliver the blanks from between the
spring gages and free the same from the bite or friction thereof. The blank
delivery rolls K K' thus serve to prevent the blanks from sticking between the

page_text: spring gages or bridges D D', after the same leave the rotary cutters C C¹, and
thus obstructing the passage of the succeeding sheet through the machine. The
blank delivery rolls K K are journaled in suitable boxes k k on vertically and
longitudinally adjustable standards K'K'. The vertical adjustment of the standard
is effected by set screws K' by which the standards K are fixed in the socket K*.
The longitudinal adjustment of the standards K' is effected by set screws K³, by
which the sockets K₁ are fixed in place longitudinally on the horizontal arms K
extending from the frame of the machine. The standards K' are slotted to receive
the boxes or journals of the rolls K K', and the box or journal k of the upper roll
is held in place by set screws which serve to exert the requisite pressure between
the rolls. The longitudinal adjustment of the blank delivery rolls K K¹ is for the
purpose of setting them in different positions to accommodate blanks of different
lengths. Whatever the length of the blank being cut or produced by the machine
the position of the delivery rolls should be so adjusted as that these rolls will grasp
the front edge of the blanks just as the rear edge thereof passes from the rotary
cutters C C. The vertical adjustment of the rolls K K and of the receiving
table H is for the purpose of keeping the same on a level with the rotary
cutters C C', so that the sheet and the slitted blanks may all issue in the same
plane without bending or breaking.
The longitudinal adjustment of the feed slide F by means of the slotted arms f*
is likewise for the purpose of accommodating sheets of greater or less length, as
may be required.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, as communicated to
me by my foreign correspondent I declare that what I claim is :-
1st. The machine for slitting or cutting metal blanks, constructed and operating
substantially as herein shown and described.
2nd. In a sheet metal slitting or cutting machine, the combination of the upper
and lower rotary cutters C C¹ with bridges or guides extending under and between
the cutters, and a pair of blank delivery rolls adapted to catch the front edge of
the blanks and draw or deliver them from between the bridges or guides after the
same pass between the rotary cutters, substantially as specified.
3rd. In a sheet metal slitting or cutting machine, the combination with the upper
and lower rotary cutters of bridges or guides extending under and between the
cutters, and a reciprocating feed slide for feeding the blank to the rotary cutters
and between said bridges or guides, substantially as specified.
4th. The combination in a sheet metal slitting or cutting machine, of upper and
lower rotary cutters, bridges or guides extending under and between the cutters, a
feed table and a reciprocating feed slide for forcing the sheet between said bridges
or guides to the rotary cutters, substantially as specified.
5th. The combination in a sheet metal slitting or cutting machine, of upper and
lower rotary cutters, bridges or guides extending under and between the cutters,
a feed table and a reciprocating feed slide for forcing the sheet between said
bridges or guides to the rotary cutters, said feed slide having a back gage for the
edge of the sheet to abut against, substantially as specified.
6th. The combination in a sheet metal slitting or cutting machine, of upper and
lower rotary cutters, bridges or guides extending under and between the cutters, a
feed table and a reciprocating feed slide for forcing the sheet between said bridges
or.guides to the rotary cutters, said feed slide having a back gage for the edge of
the sheet to abut against and a side gage for one of the side edges of the sheet to
abut against, substantially as specified.
7th. The combination with rotary cutters C C¹, of spring bridges D D', slotted
feed table E, and a reciprocating feed slide and a cross head for operating the same
projecting through the slot in said feed table, substantially as specified.
8th. The combination with rotary cutters C C¹, of spring bridges D D¹, slotted
feed table E, and a reciprocating feed slide and a cross head for operating the same

page_text: projecting through the slot in said feed table, said feed slide being adjustably
connected to said cross head, substantially as specified.
9th. The combination with upper and lower rotary cutters C C', bridges or
guides D D', a pair of blank delivery rolls and means for adjusting the position
of said delivery rolls to and from said rotary cutters, substantially as specified.
10th. The combination of upper and lower rotary cutters C C₁, bridges or
guides D D', receiving table H and blank delivery rolls K K', substantially as
specified.
11th. The combination with upper and lower rotary cutters C C', bridges or
guides D D', feed table E, feed slide F, receiving table H and blank delivery
rolls K K', substantially as specified.
12th. The combination of upper and lower rotary cutters C C¹ mounted on
shafts B B', said shaft B being journaled in vertically adjustable boxes, and said
shafts B B being furnished with gears B2 B3, and intermediate gears B B for
driving said rotary cutter shafts, and at the same time permitting the adjustment
of the shafts closer together, substantially as specified.
Dated this 1st day of December 1901
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.