IMPROVEMENTS IN IMPLEMENTS FOR CUTTING PIPES
Year: 1876

page_text: "
LETTERS PATENT to William Robert Lake, of the Firm of Haseltine, Lake, &
Co., Patent Agents, Southampton Buildings, London, for the Invention of
IMPROVEMENTS IN IMPLEMENTS FOR CUTTING PIPES." A communication
from abroad by Andrew Saunders, of Yonkers, New York, United States of
America, Manufacturer.
Sealed the 18th July 1876, and dated the 25th May 1876.
COMPLETE SPECIFICATION filed by the said William Robert Lake at the Office
of the Commissioners of Patents on the 25th May 1876.
WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "IMPROVEMENTS IN IMPLEMENTS FOR CUTTING
PIPES." A communication from abroad by Andrew Saunders, of Yonkers, New
York, United States of America, Manufacturer.
The object of this Invention is to provide a pipe cutter that, aside from its
durability, strength, and convenience of manufacture and use, shall possess the
advantages of being capable of cutting pipes of widely varying diameters; of
cutting them squarely off without leaving any burrs at the edges; of cutting as close
to the end as circumstances may in any case require, and will inoreover be incapable
of slipping longitudinally upon the pipe during the operation of cutting the same.
The said Invention comprises a circumferential rib provided upon one of the
antifriction rollers of a pipe cutter in such inanner that when the implement is in
use the said rib will circumferentially indent the outer surface of the pipe and
follow in said indentation during the operation of cutting, thereby preventing any
slipping of the implement upon the pipe and providing for the accurate action of
the cutter thereon.
The said Invention further comprises the combination of a movable jaw, carrying a
friction roller at its outer end or apex, with a trangularly recessed fixed jaw, provided
at each side of its said recess with two or more rollers, the roller on the inovable
jaw being coincident or in line with the apex of the aforesaid recess in the fixed
jaw, by which novel combination and arrangement the said roller of the movable
jaw is fitted for passage into the aforesaid recess of the fixed jaw in such manner
as to grasp and hold pipes of any diameter during the cutting operation.
The said Invention further comprises a novel combination of a square nosed

page_text: cutter actuated by one handle of the implement, with a fixed jaw recessed for the
reception of the pipe while it is being cut, and a movable jaw actuated by the other
handle whereby provision is made for cutting the pipe without leaving any burr
upon the cut end thereof after cutting as aforesaid.
The said Invention further comprises the combination in the open jawed pipo
cutter of a movable cutter provided in a recess in the side of the cutter stock and
in a plane passing by the ends of the rollers of the fixed jaw, whereby the implement
is made capable of cutting pipes close to the extreme ends thereof, cleanly and
symmetrically, and without any necessity for extra or unusual care or skill.
The said Invention further comprises a novel combination of parts whereby when
occasion requires the cutter may be readily detached from the implement for
sharpening and as readily replaced for use.
Figure 1 is a side view of a pipe cutter made according to this invention. Figure
is a longitudinal section of the same.
Figure 3 is a detached view of one portion of the said implement.
this
A is the cutter stock made of metal, cast or malleable, open at one side as shown
at B, and having formed solid or in one with it the fixed jaw C with a triangular
recess A¹. The jaw at each side, of the recess is hollowed for the reception of
antifriction rollers D, the inner sides of which project into the said recess more or
less, and which are arranged two on each side, so that the rollers in their arrange-
ment conform to the triangular shape of the recess as will be seen by reference to
Figure 1. More than two rollers on each side may be employed if desired, but the
number represented in the Drawing will, for all ordinary or practical purposes, be
found sufficient; E is a movable jaw sliding in a guide B', formed in the stock;
jaw is capable of being moved inward by a screw a, provided on the inner end of
the handle C and works through a nut provided in the end of the cutter stock A.
In the inner end of this movable jaw E is an antifriction roller F, arranged
coincident with the inner corner of the triangular recess A¹, so that when the
movable jaw is moved inward it may pass as far into the said rccess as may be
required to clasp the pipe to be cut between the antifriction roller F in the said
On the
movable jaw and the rollers D which line the sides of the said recess.
roller is a circumferential bead rib or ridge c, whose function is herein-aftor
explained. Provided longitudinally in one side of the cutter stock A is a seat
recess or guide f, wherein is placed the sliding cutter G, the nose a¹ of which
is square-ended or formed to cut a clean strip from the metal upon which it is
made to act. This cutter is attached at its rear end to a head D', formed as
represented in Figures 1 and 2, with two lugs g, which catch into a circumferential
groove e in the end of the screw m that forms the innermost portion of the handle
H, the said screw working in a nut provided in the end of the cutter stock opposite
that occupied by the other handle C"; so that by turning the handle H in one
direction or the other the cutter may be moved in or out as the case may be,
the inward thrust of the screw bearing upon the solid end of the head D¹ and
the outward thrust upon the lugs g; a plate G¹, screwed fast across the seat or
guide f, serves to hold the cutter G in place.
In the use of this implement the pipe is placed between the jaws, being prefer-
ably passed thereto through the open side B of the cutter stock. The handle C' is
then turned to clamp the pipe between the roller F of the movable jaw and the rollers
D of the fixed jaw until the rib or bead c is brought into forcible contact with
and exerts pressure upon the pipe. Then the implement is turned around the pipe,
and the rib c being forced into the outer surface thereof forms a groove therein, so that
the roller F being tightened up to any requisite extent the aforesaid bead rolls around
in the groove thus formed in the circumference of the pipe during the subsequent
cutting operation, and thereby prevents the slipping of the implement longitudinally
upon the pipe and any side strain on the cutter, and insures the most efficient

page_text: action of the latter. The pipe being thus brought between the roller of the
movable jaw on the one side, and those of the fixed jaw on the other, affords a
firm support for the implement, around which it may be freely turned. During this
axial turning motion of the implement the cutter G is fed in by operating the
handle H, the screw of which forces inward the cutter as herein-before explained.
The cutter taking a clean chip cuts oft the pipe squarely and without burring
or contracting its internal diameter at the severed end.
It is to be expressly understood that while the bead or rib c is of very great
advantage in very many cases, yet the implement is of much greater utility than
any other of the class to which its relates, even when said bead or rib c is dispensed
with, and I may therefore use the roller F in the combination herein set forth
whether the said roller be made with or without the aforesaid bead or rib c.
If it is desired to detach a cutter for sharpening, or to replace the same by another,
it is only necessary to remove the plate G and the cutter may be lifted or taken
out without further manipulation.
Having thus fully described the said Invention as communicated to me by my
foreign correspondent, and the manner of performing the same, I wish it under-
stood that I claim,-
First. The circumferential rib c provided upon the antifriction roller of a pipe
cutter as above-described and for the purpose set forth.
Second. The movable jaw E, provided with a single antifriction roller in
combination with the triangularly recessed fixed jaw C, furnished with the anti-
friction rollers D at each side, the whole being arranged for use and operation as
above-described and for the purpose set forth.
Third. The combination of the square-nosed cutter G actuated by the handle H,
the fixed jaw C recessed for the reception of the pipe, and the movable jaw actuated
by the other handle C', as above-described and for the purpose set forth.
Fourth. The combination in an open jawed pipe cutter of the movable cutter G
placed in the recess or guide f in the stock A, and in a plane passing by the ends
of the rollers D, the whole arranged for use and operation as above-described and
for the purpose set forth.
Fifth. The combination of the head D¹ constructed with lugs g, in combination
with the sliding cutter G and the circumferential groove in the actuating handle
H, these parts being arranged in relation to each other and to the plate G¹, as above-
described and for the purpose set forth.
In witness whereof, I, the said William Robert Lake, have hereunto set my
hand and seal, this Twenty-fifth day of May, in the year of our Lord One
thousand eight hundred and seventy-six
Witness,
JA'. EDWARDS,
8, Southampton Buildings,
London.
WN. ROBT. LAKE. (L.S.)