Improvements in Machinery for the Manufacture of Pipe Hooks.
Year: 1896

page_text: Date of Application, 29th Feb., 1896
Complete Specification Left, 28th Dec., 1896-Accepted, 29th Apr.. 1827
PROVISIONAL SPECIFICATION.
Improvements in Machinery for the Manufacture of Pipe Hooks.
We, STEPHEN TURNER, of 15, Talbot Street, Oldbury, in the County of
Worcester, Fitter, and ALFRED NEALE, of 121, Cross Street, Smethwick, in
the County of Stafford, Tool Maker, do hereby declare the nature of this invention
to be as follows:-
This invention consists of the hereindescribed improvements in inachinery for the
manufacture of pipe hooks. By our invention a pipe hook blank may be cut from
a strip of sheet steel or other sheet metal by each stroke of the cutters (instead of
alternate strokes as heretofore) and the said blank is automatically carried down
and gripped and flattened where required and bent into the finished hook. Thus
our said improved machine will form the pipe hooks very quickly as the operations
of cutting out the sheet metal blank and flattening and bending the same into the
finished hook are performed in one and the same machine.
In carrying out this invention we take a strip of sheet steel or other suitable
sheet metal which is by preference equal in width to the length of one pipe hook
blank and that part beyond the shoulder of another blank which is to be flattened
and hooked to clip the pipe. Or the width of the strip may be equal to the length
of the blank. In the machine we employ a stationary bottom cutter of about the
same width as the strip and made with a rebated part equal in length to the said
part of the blank that is to be flattened and bent. We also provide a moving top
cutter carried by a cross beam arranged ou centres like the beam in a machine for
making cut nails, this top cutter being by preference made in two pieces one of
which matches the rebated part of the bottom cutter. When cutting the pipe hook
blanks from the first said sheet metal strip, the wider cutter cuts off one blank and
the narrow cutter cuts the rebate in the strip to form the shoulder of the next.
blank. Then the strip is turned over so that the wide cutter will cut an inclined
blank off the wider part of the strip and at the same time the narrow cutter will
cut a rebate for the next blank. The strip is then turned back again to its original
position. Thus every time the cutter descends it cuts off one inclined and
shouldered blank and at the same time cuts a rebate in the strip which forms &
shoulder for the next blank.
When making the pipe hooks from a blank which is in width only equal to the
length of one blank the strip has first to be placed with one edge against a stop at
one side of the bottom cutier so that the top cutter will descend and cut out the
small piece to form the shoulder or the blank, and then the strip is turned over and
placed with the same edge against another stop at the other side of the bottom
cutter so that when the top cutter descends again it will cut off the blank.
Thus in this arrangement a blank is cut off at every alternate descent of the top
cutter.
Behind the moving cutters there is one or more spring gauges somewhat similar
to the gauge in a cut nail making machine which gauge or gauges regulates or
regulate the distance through which the strip is fed between the cutters and also
serves or serve to assist in carrying the rut blank down below the stationary cutter
to a part where the blank is held and gripped by an advancing tool whilst what we
call tbe smashing tool advances and flattens that part of the blank which is to be

page_text: bent to clip the pipe. This smashing tool is carried by a suitable slide operated by
a cam preferably on a revolving shaft on which there is also a cam which operates
the cutter beam and cars for operating the other moving parts of the machine.
This smashing tool acts against a rising and falling anvil or block which is operated
by a slide and lever from the aforesaid cam shaft and is so arranged that after the
blank has been inttened as stated above the anvil or block rises through a short
space so as to permit of the action of the tool or roller which bends the flattened
part of the blank into the hooked form. Fixed to the bottom side of the said anvil
or block there is a round or other pin or former corresponding in shape with the
inner part of the hook and round which, as soon as the anvil or block has moved up
as aforesaid, the flattened part of the blank is bent by means of a roller or tool
which is carried by a suitable lever or slide. When this roller recedes the finished
look falls away and the anvil or block moves down again in position ready for the
next blank to bo smashed or flattened against it.
The said roller or tool which bends the flattened part of the hook around the
former as aforesaid is by preference carried by a lever which is pivoted to a slide
which has a backward and forward movement epinmunicated to it. The other end
of this lever carries a roller which nets against n stationary cam plate which is so
shaped as to impart to the lever and roller the proper movement to bend the
flattened blank around the former as aforesaid.
Thus it will be seen that every blank as it is cut off is carried down and gripped
and flattened and bent to the hook form and falls away finished.
The cutters may be shaped so as to cut off the blank with a partly rounded end
so that when this part is flattened as aforesaid the end corresponding with the top
of the hook will be rounded.
Dated this 28th day of February 1896.
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.
Improvements in Machinery for the Manufacture of Pipe Hooks.
We, STEPHEN TURNER, of 15, Talbot Street, Oldbury, in the County of
Worcester, Fitter, and ALFRED NEALE, of 121, Cross Street, Smethwick, in the
County of Stafford, Tool Maker, 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:-
This invention consists of the herein described improvements in machinery for
the manufacture of pipe hooks. By our invention a pipe hook blank may be cut
from a strip of sheet steel or other sheet metal by each stroke of the cutters
(instead of alternate strokes as heretofore) and the said blank is automatically
carried down and gripped and flattened where required and bent int the finished
hook. Thus our said improved machine will form the pipe hooks very quickly as
the operations of cutting out the sheet metal blank and flattening and bending the
same into the finished hook are performed in one and the same machine.
We will describe our invention by referring to the accompanying drawings on
which
Fig. 1 is a sectional elevation of a pipe hook machine constructed according to
this invention; Fig. 2 is a plan of the same with the cutter beam removed;
Fig. 3 is a side elevation Fig. 4 is a plan and Fig. 5 is a front elevation of the
entter beam entters and accessories;
Fig. 6 is n front elevation and sectional plan of the top cutters and Fig. 7 is a
plan of the bottom cutters of the said machine;

page_text: Fig. 8 is a sectional elevation and Fig. 9 is a sectional plan of the part of the
machine which flattens that part of the blank which has to be bent to form the
hooked end of the pipe hook;
Fig. 10 is an elevation and Fig. 11 is a plan of the part of the machine which
bends the said blank;
Fig. 12 is a sectional elevation and Fig. 13 is a plan of the moving anvil block
round which the hook is bent shewing also the parts for operating the said anvil
block;
Fig. 14 is a sectional elevation and Fig. 15 is a plan of the parts of the said
machine shewing the nipper and the mechanism for operating the same for holding
the blank whilst it is being flattened and heat;
Figs. 16, 17, 18 and 19 are plans of the blank holding flattening and bending
mechanism in various positions to illustrate the progressive operations in the
formation of the blank into the finished pipe hook;
Fig. 20 shews a metal strip from which the blanks are cut;
Fig. 21 is a plan and elevation of one of the said blanks;
Fig. 22 shews the said blank after the pipe hook portion has been flattened and
Fig. 23 is a plan and elevation of the finished pipe hook.
The same letters of reference indicate the same parts in all the figures of the
drawings.
In carrying out this invention we take a strip A of sheet steel or other suitable
sheet metal which is equal in width to the length of the pipe hook blank B (see
Figs. 20 and 21) and is of the same thickness as is the shank part of the required
pipe hook. Fixed in the machine we employ a stationary bottom cutter made in
two parts marked respectively ee which are together of about the same width as
is the strip A and made with a rebated part. c equal in length to the part of the
blank B which is to be flattened and bent. The rebate is of the same depth as the
shoulder. This bottom cutter c is fixed in the tool box d formed on the bed
or frame D of the machine. We also provide a moving top cutter made in two
pieces marked respectively ee fixed in and carried by the cross benm E arranged
to turn on the centres e efixed in lugs d2dcast on the machine frame D these
centres etaking into counter-sunk holes e e formed in the ends of the cutter
beam E. This beam E is like the beam in a machine for making cut nails and is
operated by the cam e fixed on the revolving cross shaft F which also carries the
cams as hereinafter described for imparting motion to the various other parts of
the machine. This shaft revolves in the bearings dd on the bed plate D of the
machine. The back arm of the beam E carries a roller against which the
came acts. It will thus be understood that as the shaft revolves the cutter
beam vibrates about its centres e e, and moves the cutters el 2 up and down at the
front edge of the bottom cutters c' e² so as to shoulder and cut off blanks from the
end of the strip A as hereinafter described. The cutter beam E carries two spring
ganges marked "e" which require no further description here as they are like the
spring ganges in a machine for making cut mails and they regulate the distance
through which the strip A is fed between the cutters and also serve to assist in
carrying the cut blank 1 down below the stationary cutter e e to be flattened and
bent as hereinafter described.
When cutting the pipe hook blanks from the strip A the latter has first to be
placed with one edge against the stop g' at the left hand side of the hottom cutter
(see Fig. 2) and pushed in under the part e' of the top cutter as far as the other
part will allow. The roller of the beam E is now acting against the
depression of the cam e' and the cutters are almost in their highest position.
As the cam e turns in the direction indicated by the arrow and the lower
projection e raises the cutter bean arme the cutters e descend and the part e¹
which is a little shorter than the part e cuts out the small piece a¹ (see Fig. 20) to
form the shoulder 6 on the end of the strip A. The strip A has now to be turned
over and placed with the edge a' (see Fig. 20) against the other stop g at the other
side of the bottom entter as shewn in Fig. 2 so that when the part of the

page_text: came begins to lift the cutter beam arme the portion of the top cutter will cut
off the blank along the line at a (see Fig. 20) which blank will thus have the form
shewn in Fig. 21. As the blank is cut off it is carried down by the portion et of
the top cutter and by the spring gauges eel to below the bottom cutter cc to a
block fixed underneath the bottom cutter against the face of which block the
blank is held and gripped by the advancing tool which we call the nipper and
which is similar to the nippers used in the well known machines for making cut
nails. The said nipper consists of a lever arm the outer end of which is
adapted to nip and hold the blank B against the block 4 (see Fig. 16) this arm!
being carried by the swinging hearing at one end and operated (see Figs. 14 and 15)
by the pusher piece which is carried by the lever arm turning on the fulcrum
the upper end of said lever arin being neted on by the higher part of the
cam which is fixed upon the shaft F this cam having a cut away part shaped
substantially as shown in Fig. 14 so as to cause the nipper to advance on to the
blank B and hold the same during the flattening and bending operations and then
to retire and relense the said blank B when these operations have been performed.
The spring attached to the other end of the nipper 1 and to a book d" on Line
and keep the same in contact with the
machine frame D turns the nipper arm
front end of the pusher piece i
י,
Whilst the blank B is held between the nipper 1 and the block as shewn in
Figs. 16 ml 17, the smashing tool J advances and flattens the part of the blank B
against the moving anvil block K so that the blank will now have the form repre-
sented in Fig. 22. This smashing tool is carried by the slide (see Figs. 8 and 9)
which is adapted to slide to and fro along the guides d' d' on the bed plate D and
is moved forward by the cam fixed on the revolving shaft F. the said can
acting upon the roller fixed on the slide j. The coiled spring (Figs. 1 and 2)
connecting the hook fixed on the back of the slide to the arm on the
machine bed D, causes the slide to move backward and keep the roller in
contact with the cam 7. The set screw at the back of the smashing tool J
enables the Intter to be set forward as may be required to make up for wear.
of
As before Hated the smashing tool J flattens the part of the blank B against
the rising and falling anvil block K. The anvil block K is carried (see Figs. 12
and 13) by the slide which works up and down in the vertical guides & fixed to
the machine bed D and is operated by the two armed lever which turns upon
the fulcrum & carried by the bed D of the machine. The arm of the lever is
connected to the lower part of the slide and the upper end of the arm
the said lever is by the coiled spring (Fig. 1) kept in contact with the
operating cam which is fixed on the revolving shaft F so that the highest
part of the said cam will move the lever and cause the anvil block K to full
through a certain space and when the cam has turned so that its lower part
comes in contact with the lever arm the anvil block K and its slide & will be
caused to correspondingly rise. The shape of the cam will be understood by an
examination of Fig. 12. The upper part of the anvil block K is made with a flat
Ince against which the part of the blank B is flattened and underneath this
part of the anvil block there is formed a part which we call the former and
which is of a partly circular shape (see Figs. 18 and 19) corresponding with the
pipe which the hook is required to clip as it is round this part which the
flattened part & is bent.
After the blank B has been flattened between the smashing tool and the flat
fece of the anvil block Kas stated above nud as shewn in Fig. 17, the smashing
tool is by its cum and spring caused to retire and at about the same time the
anvil block K rises so that the rounded former is brought into the position
shewn in plan by Fig. 18 ready for the flattered part of the blank B to be ben
round the former, the said blank meanwhile being held as stated above between
the nipper and the bluck à. The flattened part of the blank 13 is bent round
the former by means of the roller or tool 1, which is arranged to act upon the
flattened part of the blank Band to bend the same round the former k" as shewn
in Fig. 19.

page_text: Immediately this roller recedes the nipper I is by the spring and cam caused
to release the finished hook B which then falls away and the anvil block K is by
its two armed lever and cam caused to move down again bringing the
part 10 into position for the next blank to be flattened.
The roller or tool L which lends the flattened part of the blank B around
the former as above described, is by preference carried by the two armed
lever (see Figs. 10 and 11) which turns upon a fulcrum fixed on the slide
which can move to and fro along the slides fixed en the bed D of the machine.
This slide has a backward and forward motion imparted to it by the cam which
is fixed on the revolving shaft the said cam working against the roller which is
fixed on the slide . The spring connected to the lever arm and to the pin
fixed to the bed D keeps the roller in contact with the cam . The outer end
of the lever arm 12 carries a roller which acts against a stationary cam plate 110.
which is shaped substantially as shewn in Fig. 11 that is to say the cam
plate has a projection against which the roller acts as the lever and slide
are making their forward movement thereby causing the roller 1. to enter in
between the end of the smasher J and the former as shewn in Fig. 18. Then
as the forward movement of the slide and the lever is continued by the cam
the roller in moving along the curved part of the plate / is caused to follow
round the shape of the former and bend the flattened part of the blank B.
around the former and ultimately assume the position shewn by Fig. 19. When
the slide with its lever retire the roller L has the opposite movement ultimately
assuming the position shewn in Figs. 16 and 17 out of the way of the advancing
smashing tool J.
Thus it will be seen that at every revolution of the cam shaft F the end of the
strip A is notched at a' and turned over and the blank B is cut off and carried
down and held by the nipper and smashed by the smashing tool J against the
anvil block K and bent round the former by the bending tool L and is then
released by the nipper I and falls away finished.
Whilst the smashing and bending operations above described are taking place,
the cutter beam E and cutters have been raised and have notched and cut off
another blank B and commenced to carry the same down to the mpper I immediately
after the finished book has fallen away.
It is to be understood that we do not limit ourselves to the precise details of
construction herein before described and illustrated by our drawings as it will
be evident that the same may be varied and modified without departing from the
nature of our invention.
Having now particularly described and ascertained the nature of our said inven-.
tion and in what manner the same is to be performed, we declare that what we
claim is
1. In a pipe hook making machine the employment of the fixed rebate bottom.
cutter ele the moving cutter e' e carried by a swinging beam and matching said
bottom cutter and the spring gauge at the back of the moving cutter these parts
being so arranged that the moving cutters make a short down stroke and cut a
shoulder in the end of the metal strip and then rise and then when said strip is.
turned over and moved sideways and pushed under the part e' of the cutter against
the spring gange the cutters make a full down stroke and the part e of the cutter
cuts off a shouldered pipe hook blank from the strip all substantially as herein before
set forth.
2. In a pipe hook making machine provided with cutters constructed and
operating as denoted under Claim One to shoulder and cut off the pipe hook blanks
from the metal strip A, the employment of the nipper adapted to hold the blank as
it is carried down by the moving cutter and while said blank is being flattened
and bent in the hooked form, substantially as hereinbefore set forth.
3. In a pipe book making machine provided with entiers constructed and
operating as denoted under Claim 1 to sboulder and cut off pipe hook blanks from.

page_text: the metal strip A, the employment of the nipper adapted to hold the blank as it is
carried down by the moving cutter, and the smashing tool I with means for
advancing the same to flatten the part of the pipe hook blank which is to be bent
into the hooked form, all substantially us herein before set forth.
4. In a pipe hook making machine provided with cutters constructed and
operating as denoted under Claim 1 to shoulder and cut off the pipe hook blanks
from the metal strip A, the employment of the nipper adapted to hold the blank as
it is carried down by the moving cutter, the smashing tool I with means for
advancing the same to flatten the part of the pipe hook blank which is to be bent
into the hooked form the rising and falling nuvil K made with the former
underneath, means for operating the said anvil so as to bring the flat part k for
the blank to be flattened against and then to rise and bring the former & into
position for the blank to be bent around, and a bending to adapted to bend the
said hook blank around the said former, all substantially as hereinbefore set
forth.
5. In a pipe hook making machine in which the shouldered blanks are cut off
and carried down to be flattened and bent, the employment of the rising and falling
anvil K and means for operating the same so as to bring the part into position
for the blank to be flattened against and then to rise to bring the former
position for the blank to be bent around the same substantially as herein before
set forth.
into
6. In a pipo hook making machine in which the shouldered blanks are cut off
and carried down and flattened and bent, the combination of the bending roller L
carried by the lever arranged on the slide and adapted to have forward and
backward movement by the cam the cam plate shaped so as to act upon the
arm of the lever and cause the bending roller L at the end of the arm to bend
the blank into the hooked form as the slide advances, all substantially as
bereinbefore described and illustrated by the accompanying drawings.
7. The improved machine for cutting off and bending pipe hook blanks, the
parts being constructed and arranged for joint operation in the manner substantially
as hereinbefore described and illustrated by the accompanying drawings.
Dated this 23rd day of December 1896.
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.