Certain Improvements in Machinery for making Pipe Hooks.
Year: 1896

page_text: Date of Application, 20th Nov., 1896
Complete Specification Left, 20th Sept, 1897-Accepted, 30th Oct., 1897
PROVISIONAL SPECIFICATION.
Certain Improvements in Machinery for making Pipe Hooks.
I, MARGARET TEw, of 20, Windmill Lauc, Smethwick, in the County of Stafford,
Widow, legal representative of Charles Albert Tow, late of The Forge Tavern, Rolfe
Street, Smethwick, aforesaid, Gas Hook Manufacturer, who died on 31st July,
1896, do hereby declare the nature of this Invention to be as follows:-
This Invention has reference to machinery for making what are commonly
known as pipe hooks aud gas hooks which are used for securing gas and water pipes
and other pipes to walls and the like.
In a machine constructed according te this Invention shouldered and pointed
blauks for forming the hooks are cut off the end of a heated strip of sheet steel or
other sheet metal and are flattened one at a time where required and the flattened
part bent into a hooked form thus finishing the hook, all these operations being
performed automatically in one machine which is constructed as follows:-
A stationary bottom cutter is fixed to the bed or frame of the machine and is
rebated at one part to correspond with that part of the hook blank where the piece
is cut out to leave the shoulder. This stationary bottom cutter is by preference
made in two pieces for convenience of manufacture and of setting. The top cutter
is also by preference made in two parts aud of corresponding shape with the rebated
bottom cutter and is carried by a lever beam, somewhat like the beam of a cut nail
machine, arranged to work on centres fixed to the bed of the machine and operated
by a cam on a revolving shaft on which latter the cams for giving motion to the
other parts of the machine hereinafter described are by preference fixed. At the
back of said top moving cutter and carried by the said beam we provide two spring
gauges, somewhat like the spring gauges of a cut nail machine, these gauges giving
the width of the blank which is cut off and also serving to hold the blank against
the vertical face of the rtationary cutter as the blank is carried down by the top
outter.
The heated sheet metal strip from which the blank is cut off is placed against
a stop on one side of the stationary bottom tool box so that as the cutter
descends a piece will be cut out of the end of the strip leaving a shoulder. The
strip is then turned over so that the side which was at the top is now at the
bottom and the edge is placed against a stop on the other side of the bottom
tool box and when the cutting off tool ascends the strip is pushed under the
same as far as the stop gauges will allow, and then when the top cutter descends
again a pointed and shouldered blank is cut off and by the top cutter and the
spring gauges is carried down for a short distance and gripped at or near its
pointed end by means of a nipper which has an arın arranged to swing at one end
and operated by a rod from a cam on the said revolving shaft so that at the proper
time the said nipper arm presses and holds the blank against the lower part of the

page_text: bottom cutter. As or just before the top cutter rises the part of the blank which
has to be bent is flattened by menus of a flattening tool which squeezes that part of the
blank against a fixed and stationary anvil block held in the bottom tool box just
below the bottom cutter. The said flattening tool is carried by a swinging beam
or grip lever which turns on centres below the stationary tool box and has one
arm extending back to the said cam shaft on which is the can for imparting the
proper movement thereto. During this flattening process the moving cutter has
moved up and the strip has been again pushed under the cutter which has cut a
notch in the end of the strip to form the shoulder for the next blank and as the
cutter descends the spring gauges carried by the cutter bean as aforesaid come into
contact with the said flattened blank and carry the same down a little further where
it is again nipped and held by the nipper and where there is a stationary rounded
foriner immediately underneath the anvil block this rounded former being of the
same shape and size as the pipe which the hook is required to hold. The bending
of this flattened part of the blank round the former is performed by two bending
tools one of which is arranged to move to and fro longitudinally in the machine and
at the proper time strikes the end of the flattened portion of the blank and bends
the same around the former to about right angles with the shauk of the book.
other bending tool which works at about right angles to the first bending tool, that
is across the machine, then strikes the straight flattened part of the blank so as to
complete the bending of the same sound the former thus finishing the hook which
is then released by the nipper and falls away fiuished down an incliue to the front of
the machine. The bending tools then retire out of the way, ready for the next
blank. The said bending tools are both operated by rods or slides from two
cams fixed on the said revolving shaft. Directly after the first said blank has been
bent into a finished hook and has fallen away another blank is cut off by the cutters
and carried down and flattened and carried further down and bent into a hook as
above described. Thus it will be seen that the operations are continuous and that
the blauks for forming the hooks are cut off and formed into finished hooks by the
series of consecutive operations above described performed automatically in the
one machine.
Dated this 10th day of November 190c
The
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
Certain Improvements in Machinery for making Pipe Hooks.
I, MARGARET TEW, of 26, Windmill Lane, Smethwick, in the County of Stafford,
Widow, legal representative of Charles Albert Tew, late of The Forge Tavern, Rolfe
Street, Smethwick, aforesaid, Gas Hook Manufacturer, who died on 31st July 1896,
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 has reference to machinery for making what are commonly known
as pipe hooks and gas hooks which are used for securing gas and water pipes and
other pipes to walls and the like.
In a machine constructed according to this Invention shouldered and pointed
blanks for forming the hooks are cut off the end of a heated strip of sheet steel or
other sheet metal and are flattened one at a time where required and the Hattened
part bent into a hooked form thus finishing the hook all these operations being

page_text: performed automatically in one machine which is constructed as I will now describe
with reference to the accompanying drawings on which
Fig. 1 is a plan of a pipe hook making machine constructed according to this
Invention with the cutter bean and cutters removed;
Fig. 2 is a front elevation of the said machine;
Fig. 3 is a side elevation of the same;
Fig. 4 is a sectional side elevation of the same;
Figs. 5, 6, 7, 8 and 9 shew parts of the said machine in various positions to
illustrate the operation of the same in the formation of the pipe books;
Fig. 10 shews the metal strip froin which the pipe hook blanks are cut;
Fig. 11 shews the same strip with one of the blanks cut off;
Fig. 12 represents one of the blanks separately;
Fig. 13 shews one of the blauks after the part which has to be bent has been
flattened;
Fig. 14 shows the finished pipe hook;
Figs. 15, 16, 17, 18 and 19 are various cams of the machine as horoinafter
described.
The same letters of reference indicate the same or corresponding parts in all the
Figures of the drawings.
In the said machine constructed according to my Invention a stationary bottom
entter preferably made in two parts marked respectively A' A is fixed in the
stationary tool box b' cast with the bed or fraroo B of the inachine this frame being
shaped to carry the various working parts of the machine. The part A of the
bottom cutter is set back as shewn in Fig. 1 so as to form a rebate to correspond
with that part of the hook blank where the piece o¹ (Figs. 10 and 11) is cut out to
leave the shoulder d' on the finished hook D. The said bottom cutter may be made
in one piece but it is by preference inade in two pieces as shewn for convenience of
manufacture and setting. The top cutter is also by preference made in two parts
marked respectively K E the part E being shorter and made to project forward to
correspond with the rebated bottom cutter and these top cutters are carried by the
lever beam F which is somewhat like the beam of a cut nail machine arranged to
work on the centres f¹ f fixed to the bed of the machine the said lever beam F
being operated by the can shewn separately by Fig. 15 and fixed on the revolving
shaft g which turns in bearings in the machine frame B and ou which the cams for
giving motion to the other parts of the machine hereinafter described are also fixed.
The shaft g2 revolves in the direction indicated by the arrow in Figs. 3 and 4 and
receives motion through the spur wheels g³ g from the first motion shaft g'
and on which is the fly wheel g³ the shaft g¹ revolving in bearings in the machine
frame and receiving rotary motion from any convenient source as by a band on the
pulley At the back of the top moving cutter E and carried by the beam F
we provide two spring ganges el et (see Figs. 2, 3 and 4) somewhat like the spring
gauges of a cut nail machine these gauges as in a cut nail machine giving the width
of the blank which is cut off and also serving to bold the blank against the
vertical face of the stationary cutter as the blank is carried down by the top cutter.
The spring gauges are carried on the centres and are made with npwardly
projecting tails a conuected by springs to the stem e fixed on the beam
that the pull of these springs will turn the spring gauges about the centres e³
and keep their lower ends up to their work. At the sides of the bottom cutter
are two stops marked respectively a' at to give the exact sideways position of the
metal strip C whilst it is being operated upon by the cutters as hereinafter
described.
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so
The heated metal strip C from which the blanks are to be cut off is held at
one end by tongs on the end of a holder which can revolve in the top of an upright
stand such as are well known and commonly used with cut nail machines for bolding
and turning over the strip from which the nail blanks are cut. The strip C makes
an angle with the cutters about as indicated by the dotted lines in Figa. 1 and 4 and
in the first operation of cutting out the part of (see Figs. 10 and 11) the strip is

page_text: placed with its edge against the side stop a on the left hand side of the bottom
cutter box band is pushed forward under the top outter E against the stop f
which is fixed to the side of the cutter beam F at the back of the top cutter E.
The front part of the bean F and the top cutters EE carried thereby are now
almost in their lowest position the roller f fixed on the tail end of the cutter
beam F having fallen back into the recessed part fo of the cam
cutter E is as shewn in Fig. 2 shorter than the other cutter E there is now
just room for the strip to be inserted under the cutter E. As the cam fa
revolves the higher part fraises the tail end of the cutter beam F and brings
down the cutters so that the cutter E descends and cuts out the piece c¹ froin
the end of the strip C leaving the shoulder (see Fig. 10) which will be the
shoulder of the fiuished hook. The strip C is then turned over so that the side
which was at the top is now at the bottom and the edge of the strip which
was on the left hand is now on the right hand and is placed against the stop a¹ on
the right hand side of the bottom tool box and when the cutting off tools E' E'
ascend the strip is pushed under the same part as far as the spring ganges d'e
will allow and then when the top cutter E E descends again a pointed and
shouldered blank D such as shewn in Fig. 12 is cut off by the top cutter E¹ and is by
the said top cutter and the spring gauges e carried down for a short distance and
gripped at or near its pointed end by means of a nipper H which consists of an arm
arranged to swing on one end h¹ and at the other eud h shaped to nip the blank
against the plate A3 which is fixed in the tool box b underneath the bottom
cutter A. The vipper H receives its forward movement by the sliding rod ha
carried by guides h h from the frame B of the machine and at its back end made.
with a roller which bears against the cain 7 on the revolving cam shaft g². h³ is
a coiled wire spring attached to the outer end of the nipper arm so as to keep the
same in contact with the rod 3 and the latter in contact with the cam h. The
cam is shewn separately by Fig. 17 and is made of a shape to give a horizontal
movement to the sliding rod and nipper arm H to press and hold the blank
against the bottom plate A under the bottom cutter and to release and again hold
the same at the proper times as bereinafter described. Iminediately after the nipper
arm H has held the blank D against the auvil block A under the bottom cutter as
above described, and shewn in Fig. 6, the top cutters are by the recess f of the
cam caused to rise slightly and the part of the blank D is now flattened by the
flattening tool, I which advances as shewn in Fig. 7 and squeezes the said portion <*
of the blank against the block A underneath the hotton tool A'. The flattening
tool is carried by the swinging beam or grip lever which turns about the
centres in the machine frame and extends back to cam shaft g³ on which is
the cam shewn separately by Fig. 16 for operating the lever and imparting the
backward and forward motion to the flattening tool I. The coiled spring keeps
the roller of the grip lever i in contact with its cam . During this lattening
process the moving cutters EE have moved upwardly as stated above and the
strip C has been again pushed under the cutter E and against the side stop a as
first above described, so that the cutter E has cut another notch, such as shewn by
the shaded portion marked in Fig. 11, in the end of the strip C to form the
shoulder for the next blank and as the cutter E2 descends to cut out the part cathe
spring gauges el e² at the back of the cutter E' come into contact with the flattened
blank and carry the saine down a little farther (the flattening tool I having
meanwhile retired and the nipper H having also released the blank) to the stationary
rounded former J fixed immediately underneath the anvil block A this rounded
foriner J being of the same shape and size as the pipe which the hook is required to
hold (see Figs. 4, 8 and 9). The nipper H again advances and holds the blank 1) as
represented in Fig. 8 whilst the bending of the flattened part d of the blank around
the former J is performed by the two bending tools K and I one of which vie:-
K is arranged to move to and fro longitudinally and at the proper time, that is
immediately after the blank D has beeu flattened and again uipped by the nipper H
the bending tool K is moved from the position shewn in Fig. 7 to that shewn in

page_text: Fig. 8 so that this bending tool K strikes the flattened part d of the blank D
and bends the saine partly round the former J as represented in Fig. 8 to about right
angles with the shank part of the hook the other bending tool f, which works at
about right angles to the first beuding tool K that is ncross the machine, then
strikes the straight flattened part of the blank moving it sideways from the
position shewn by Fig. 8 to that shewn by Fig. 9 thus completing the bending
of the flattened part de around the former J and finishing the book which is then
released by the nipper H and falls away finished down au inclined shoot M to the
front of the machine. The bending tools K and L then retire out of the way
ready for the next blank. The operating ends of the bending tools K and L are
by preference furnished with rollers as shewn in Figs. 8 and 9 so as to diminish
the friction as they work against the blank in bending the same.
The bending tool K receives its notion as aforesaid by being jointed at one end
to the frame B of the machine the backward notion of this bending tool being
obtained by the coiled spring connected to the bending tool and to a part of the
frame B and the forward motion of the bending tool K being obtained by the sliding
rod which works in guides on the machine frame and receives backward and
forward motious at the proper times by means of the cam fixed on the revolving
shaft g" this cam being shewn separately by Fig. 18 the bending being performed
as the high part k' of the cam passes and acts upon the end of the rod ³.
The other bending tool L receives its backward and forward motions by being
connected at its outer end to the lever which turns upon a fulcrum pin 13
carried by the machine frame B and its other end is acted upon by the face
cani 6 fixed on the revolving shaft g this cam being shewn separatoly by Fig. 19
where it will be seen to have a high part of the lever and push the bending tool 1.
inwardly to bend the blank as above described. The end roll of the lever is
kept in contact with the cam 1 by the coiled spring l'.
Directly after the first said blank has been bent into a finished hook and has fallen
away as above described another blank has been similarly cut off from the end of the
strip C by the cutter E¹ and is carried down and nipped and flattened and released
and carried down further and again nipped and bent into the hook as above
described. Thus it will be seen that the operations are coutinuous and when the
blanks for forming the hooks are cut off and formed into hooks by the series of
consecutive operations above described performed automatically in one machine.
It is to be understood that I do not limit myself to the precise details of construc-
tion herein described and illustrated by my drawings as it will be evident that the
same may be varied and modified to some extent without departing from the nature
of this Invention.
Having now particularly described and ascertained the nature of my said Inveu-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. A machine for making pipe hooks from a strip of metal in which the strip is
notched by movable cutters operating against fixed cutters aud after being turned
over has a pipe hook blank cut from its end by said cutters which blank is carried
down by the moving cutter and spring gauges to a nipping device which holds the
blank in position between a stationary anvil and a flattening tool carried by a
swinging grip lever which flattening tool advances and flattens the part of the blank
which is to be bent to form the hook the moving cutters and spring gauges mean-
while rising and then descending again so that the cutter simultaneously notches the
end of the strip to form the shoulder of another blank while the said flattened blank
is carried down to a stationary former where the blank is again nipped and held
whilst the flattened part is bent round the former by two bending tools one of which
first partly bends the blank and then retires and the other finishes the bending and
thus finishes the pipe hook which is then released by the nipper and falls away from
the machine, all substantially as described.

page_text: 2. The improved pipe hook making machine constructed arranged and operating
in the manner substantially as herein described and illustrated by the accompanying
drawings.
noted th: 19th d... of Cantambor 1907
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.