Improvements in Machines for Making Pipe Clips.
Year: 1892

page_text: Date of Application, 26th Aug., 1892-Accepted, 8th Oct., 1892
COMPLETE SPECIFICATION.
[Communicated from abroad by HERBERT N, FENNER, of Providence, Rhode
Island, United States of America.]
Improvements in Machines for Making Pipe Clips.
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 :-
This invention relates to a machine for making spring clips for attaching pipes
to the walls of a building, and it consists in the improved construction and arrange-
ment of the several parts of the machine, and in the improved construction and
operation of the dies, as hereinafter fully set forth.
Fig. 1, represents a front elevation of the machine.
Fig. 2, represents a top view of the die-bed of the machine, as taken from the
line 2, 2, of Fig. 1.
Fig. 3, represents a vertical section taken in the line 3, 3, of Fig. 1, with the
plunger in the intermediate position.
Fig. 4, represents a vertical section taken in the line 4, 4, of Fig. 3.
Fig. 5, represents a vertical section taken in the line 3, 3, of Fig. 1, with the
plunger in the lower position.
Fig. 6, represents a vertical section taken in the line 6, 6, of Fig. 5.
Fig. 7, represents a top view of the die-bed with the carrier in its rearward
position.
Fig. 8, represents a vertical section taken in the line 8, 8, of Fig. 7.
Fig. 9, represents a top view of the die-bed shewing the carrier in its forward
position.
Fig. 10, represents a vertical section taken in the line 10, 10, of Fig. 9.
Fig. 11, represents a perspective view of the pipe clip to be formed in the
machine.
Fig. 12, represents a top view and vertical section of the opposite bending
plungers.
Fig. 13, represents an enlarged top view of the cutting and punching dies,
in the two part die holder.
Fig. 14, represents an enlarged top view of the two part die holder, without
the dies.
Fig. 15, represents a perspective view of one of the dies removed from the
holder.
Fig. 16, represents a detail side view, shewing the feeding mechanism.
Fig. 17, represents an under view of the cutting off plunger.
Fig. 18, represents an enlarged vertical section taken in the line 18, 18, of
Fig. 9, with the carrier in the forward position.
Fig. 19, represents the same with the carrier in the backward position.
In the accompanying drawings, A represents the frame of the machine, B the
driving shaft, and C the cross-head, which is connected with the crank D of the
shaft B, by means of the connecting rod E. The cross-head C is provided with
the cutting off plunger F, the circular punches G, G, the forming plunger H, and
the cam pieces I, I. The cutting off plunger F is formed of a piece of steel made
in the proper concave form at its sides to round the ends of the cut off blank, and
retained in its holding socket a, by means of the set screw b. The forming
plunger H, is held in the adjustable holder 3, by means of the set screw c, and the
aid adjustable holder J, is held in the dove-tailed groove d, of the cross-head, by

page_text: 4
means of the set screw e, and the punches G, G, are held in their holding sockets
by means of the set screws, ff. The opposite cam pieces I, I, are secured to the
cross-head C by means of the screw bolts g, g, and are made capable of inward
adjustment at the lower or engaging end, by means of the adjusting screw i.
دار
The concave die K, for bending the clip, is held in its socket j, in the die holding
bed L, by means of the set screw k, and above the die K, and at either side of the
same, are placed the sliding plungers M, M, which serve, first in conjunction with
the forming plunger H, to bend the blank o' to form the clip n', and then, by an
inward movement, to bend the sides of the clip inwardly, so that when applied to a
pipe, the clip will retain its position upon the same until properly secured by the
attaching screws. The sliding plungers M, M, are held in the dove-tailed grooves 1, 1,
of the die holding bed, and the backward movement of the said plungers is effected,
by means of the spiral springs, m; and the extent of such movement, is controlled,
by means of the adjusting screws n, which are held in the screw threaded
standards o, o.
The plungers M, M, are cach provided with the inclined surface
which by engaging with the inclined surfaces h, of the cam pieces I, I, will serve
to force the plungers M, M, toward each other against the side of the forming
plunger H, as shown in Fig. 6, to force the sides of the clip a¹, inwardly, so that
they will grip the pipe, the forming plunger HI, being recessed or made narrower
at its neck, than at its rounded end r. The sliding carrier N, is operated from
the cam O, on the driving shaft, by means of the lever P, which is attached to the
pivot rods, and held against the cam by means of the spiral spring v, the lower
end of the lever P, being held in the opening t, in the carrier N, the said carrier
being also provided with the clearers u, u, which are provided with the horns a',
adapted to engage with the attaching ears of the clip n', as shown in Figs. 3 and 4,
while the clearer w, which is also attached to the carrier N enters. the central
slot of the forming plunger H, and acts against the curved portion of the clip, to
cause its removal from the forming plunger.
The cutting off and punching dies are preferably made as shewn enlarged in
Fig. 15, the die holder Q being made in two parts y', ', each provided with
the curved recesses, which are adapted to receive and hold the dies R, R, the
said dies being provided with the central perforation 61, which receives the end of
the punch G, for making the perforation in the ends of the clip; and the cutting
off plunger F is made to fit the space e', between the peripheries of the dies R, R,
and when the said dies get dull at one side, their sides may be reversed, thus
providing a fresh cutting edge, and when both corners of the die are dull, the dies
can be taken from the die holder, and ground on an emery wheel to a proper
cutting edge. The die holder Q, is held in the die holding groove z, by means of
the set screw, the remaining portions of the groove being filled with the
supporting blocks g'. The cut off blank o¹, rests under the parallel adjustable
guide plates S, and T, which are held upon the die holding bed L, by means of
the screws, and the adjustable stop plates, U, are arranged to hold the blank
in its proper position over the forming die, the said plates being held upon the
bed L by means of the set screws /¹.
At the side of the carrier N, is pivoted the latch V, provided with a projecting
pinj, which upon the forward movement of the carrier, will pass on to the upright
flange, on the stop plate U, and will serve to raise the forward end of the latch
from the bed on which it rests.
The metal strip m', of which the clip is formed, is fed to the cutting off die, by
means of the geared feed rolls W, W, which are operated from the shaft B, by
means of the adjustable crank X, connecting rod Y, and the reciprocating rack Z,
the said rack being made to engage with the gear A, which is loose on the
shaft B, of the upper feed roll W; and to the side of the said gear, is attached
the dog C, which engages with the teeth of the ratchet wheel D', secured to
the shaft. B, thus causing the forward movement of the strip m', at each
revolution of the shaft B.
When the strip m', is fed forward by the action of the rolls W, W, the end

page_text: of the said strip will pass inside of the small hook d', of the gravitating or spring
actuated latch V, as shewn in Fig. 19, which will operate to prevent the
turning of the forward end of the blank o¹, by reason of the imperfect action
of the punches and the cutting off plunger which may result in the production
of an engaging fin, which will cause the adhesion of the rearward end of the
blank to the die, and when the blank has been properly started from the die,
the pin, will, by engaging with the flange k', of the stop plate U, raise the
hook d as shewn in Fig. 18, so that, the blank o' will be left in its proper position
over the forming die, upon the backward movement of the carrier.
The operation of the machine will be as follows:
The strip of hoop iron m¹, to form the clips, is fed forward to the cutting off
and punching die R, by means of the feeding rolls W, W, upon the upward
movement of the cross-head C, the end of the strip m', being carried forward
so as to rest under the projecting lip e', of the adjustable guide plate S, and inside
of the hook d¹ of the latch V. Upon the downward movement of the cutting off
plunger F, and the punches G, G, the blank o' will be cut off from the strip m',
and punched with the hole. Then upon the succeeding upward movement of
the cross-head, the carrier N will be brought forward, carrying the cut off blank
from under the guide plates S and T, to a position over the concave die K, so
that, upon the succeeding downward movement of the forming plunger H, the
blank will be bent to form the clip, as shewn in Fig. 6, and then, upon the
upward movement of the cross-head C, the carrier N, will be again brought
forward with another blank; and the clearers u, u, and w, attached to the said
carrier will engage with a finished clip and cause the forcible removal of the
same, from the forming plunger H.
By the attachment of the arm, to the pivot rods for engagement with the
cams, on the shaft B, the carrier N will be operated back and forth in a positive
manner, and without entire dependence upon the action of the spring v.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated to
me by my foreign correspondent I declare that what 1 claim is :
1. The combination with the die holder made in two parts, and the perforated
dics held therein, of the opposite punches, and the intervening cutting off plunger,
substantially as described.
2. The combination with the forming plunger, contracted or recessed at its
base, and the concave forming die, adapted to receive the rounded end of the
forming plunger, of the side plungers, operating to force the sides of the bent
clip into the recess or contraction of the forming die, substantially as described.
3. The combination with the reciprocating cross-head, provided with the
cutting off and punching plungers, and the forming plunger, of the cutting off
and punching dies, the concave forming die, and the reciprocating carrier, for
transferring the blank laterally from the cutting off and punching dies, to the
forming die, substantially as described.
4. The combination with the reciprocating cross-head, provided with the cutting
and punching plungers, and the contracted or recessed forming plunger, of the
cutting off and punching dies, the concave. forming die, and the reciprocating
carrier, for transferring the blank laterally from the cutting off and punching dies,
to the forming die, the plungers for forcing the bent clip into the recess or con-
traction at the sides of the forming plunger, and the clearers adapted to force the
clip laterally from the forming plunger, substantially as described.
5. The combination with the forming plunger, provided with a slot at its end,
and contracted or recessed at its base, and the concave forming die, of the plungers
for forcing the sides of the bent clip into the recess or contraction of the forming
plunger, and the clearer, adapted to enter the slot in the forming plunger, to force
the finished clip from the same, substantially as described.
6.The combination with the reciprocating cross-head, provided with the forming

page_text: plunger, contracted or recessed at its base, and the opposite inclined cam-pieces,
of the concave forming die and the spring actuated plungers provided with an
incline adapted for the engagement of the cam pieces to cause the forward movement
of the said plungers, to force the bent clip into the recess or contraction at the sides
of the forming die, substantially as described.
7. The combination with the cutting off and punching dies, and the concave
forming die, of the adjustable guide plates, the adjustable stops for holding the
blank over the forming die, and the reciprocating carrier for transporting the blank
laterally from the cutting off and punching dies to its position over the forming die,
substantially as described.
8. The combination with cutting off and punching dies, and the forming die, of
the reciprocating carrier, for transporting the blank laterally to its position
over the forming die, and means for preventing the turning of the blank, upon the
initial forward movement, of the carrier, substantially as described.
Dated this 26th day of August 1892.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.