Stud Screwing Machine for Screwing Two Ends at Once.
Year: 1894

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 18 of the Patents, &c. Act, 1883), as allowed by
the decision of the Comptroller General of the 16th day of March 1896.
Date of Application, 6th Mar., 1394
Complete Specification Left, 3rd Dec., 1894-Accepted, 4th May, 1895
PROVISIONAL SPECIFICATION.
A Stud Screwing Machine for Screwing Two Ends at Once.
ARA GREEN 455 Paisley Road Glasgow Screw Tool Maker do hereby declare
the nature of this invention to be as follows:-
Is to cut the studs in lengths in the usual way then put them between two heads
containg open jaws or dies the one head is driven by a belt and has a spring stop the
back of the dies the other head a screwd stop to put them in motion is to slide
the head on the machine bed to the one revolving causing the stud to be screwed
the screwed stop over comes the spring stop. By ajusting the screwd stop for the
short end the other end continus screwing up to a given hight then the dies are
thrown open by a travising bar.
To explain, my invention is to cut the iron in lengths the usual way, the machine
contans two heads the one end is dreven by a belt the other is stationary and
slides along the machine bed you put the stud one end in the dies that is stationary
and you push it to the head that is revolving by a lever the dies revolving grips
the stud screwing it in the dies that is stationary to prevent it screwing to far I
have a screwed stop the back of the dies and the dies are set a little larger than
the dies revolving causing that end to be screwed first and that end comming to
the stop, stops its further screwing that end, causing the other end to continue
screwing to a given hight. When the jaws or dies are opened by a travising bar
the stud is then pushed back and released the machine is ready for another one to
be put in.
A Stud Screwing Machine for Screwing Two Ends at Once.
ARA GREEN 455 Paisley Road Glasgow Screw 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 :-
To explain my invention is to cut the iron in lengths in the usual way and point
them, the studs are then put between two heads containing open jaws or dies, one
head is driven by a belt and has a spring stop through the spindle the back of the
dies the other head does not revolve and is made to move longitudinal and has a
[Price 8d.]

page_text: crewed stop or gage at the back of the dies to put them in motion is to place one
nd of the stud in the dies that is stationiry move the head up to the one revolving
he dies grip the stud and starts screwing in the tools or dies that is stationery-by
aving set them 4 larger on the screwed end of the stud for screwing tight in the
netal. The other end being standard size has the most to take off carrieng it
hrough the dies having the least amount of friction. To prevent it being screwed
o far there is a stop or screwed gage set to the required distance. The moment
he end of the stud comes in contact with the gage it prevents its further screwing,
he other dies continue screwing until thrown open by means of the stop on a bar
n the manner herein explained by the drawings.
Figure 1 represents nlan
Figure 2 represents the machine for making studs containing my improvements,
three cutting tools being employed in the rotating head or spindle of the machine
and two cutting tools in the head that is stationery with the leavers links and stops
as in action.
CC are the cutting tools or dies having the ends taped of the ordinary kind,
three being employed. These cutting tools or dies are carried by holders on the
end of the short arms of the leavers D. D. the said leavers being jointed at E to
the bearing plate F which is screwed or otherwise fixed on the end of the rotating
hollow spindle G' of the machine driven by a belt. The longer arms of the cutter
leavers D. D. are connected by short links K K to a sliding collar L on the
rotating spindle of the machine." When the collar L is moved towards the cutting
tools CC the tools close or lock by the action of the links K K upon the leavers D D
and when the collar L is moved in the opposite deriction the said cutting tools
open by the action of the links upon the cutter leavers. The collar L is moved
on the rotating spindle automatically or by hand for opening and closing the
cutting tools in the manner herein explained. M is a sliding die head square in
section and is bolted or otherwise fixed to a sliding saddle working on the fixed
guide P on the bed of the machine.
This head and saddle M, M is moved in the guide P so as to advance the stud
with one end held in the tools N, N towards the cutters C C, or withdrawn from
the said cutters by the action of the hand leaver G to which the head is bolted.
The end of the leaver is jointed to the stud on the bed of the machine. By the
advance movement of the hand leaver G the end of the stud is advanced between
the closed cutting tools C C which seize the stud carries it up to the stop B the stud
being prevented going further and continues screwing until sufficiently advance
between the cutting tools C C and the required distance of screw cut upon it, the
cutting tools open automatically and release the stud which is withdrawn from
between them by means of the hand leaver G. The cutting tools C C are opened
and closed at the proper times and length of screw cut upon the stud is dertermined
by the following combination of parts. Ris a horizontal bar situated parallel to the
stud to be screwed, the said horizontal bar having two stops S S and between
the stops is a horizontal finger U. the eye end of which slides freely on the bar R
the finger U is fixed to O and partakes of the motion of the sliding saddle M
carring the stud to be screwed. One end of R is supported in the eye bracket V
and its opposite end supported by another eye bracket H the middle is jointed at I
to the arm or leaver, the axis J of which carries the fork Q Fig. 1. Pins or
studs on the branches of the fork Q engage in the grove in the sliding collar L
on the rotating spindle of the machine so that the motion of the collar L in one
or other deriction causes the links K K to which the collar is jointed to act upon
the cutting tools C C. This is effected automatically, and the closing of the tools
is effected by the action of the hand leaver G in the following manner When the
stud being operated upon has advanced sufficently between the cutting tools to
form a screw on of the required length the finger U carried by the sliding

page_text: saddle M strikes against the stop S and a sliding motion is thereby given to the
bar R. the fork Q is by the motion of the bar R turned through the required
angle by the action of the arm T and axis J and the fork made to slide the
collar L upon the hollow spindle from the cutting tools C C by this sliding motion
of the collar L the cutting tools C C open in the manner before described and
release the stud under treatment, the stud coming to rest. By now giving a.
backward movement to the hand leaver G the screwed stud is withdrawn from the-
cutting tools C C; in making its backward movement the finger U on the sliding
saddle M strikes the second stop S and thereby moves the sliding bar R in the
deriction proper to cause it to close the cutting tools C_C through the operation of
the arm T fork Q collar L link K K and leavers D, D; M is the head and
contains two cutting tools or dies N N screwed to guide plates A. and made a nice
working fit in the casting M. the said plates have a stud or projection to work in
the plate W having eccentric slots to give them a forward and backward motion..
Plate X. has a stop to regulate the distance to close the tools N, N after the
cutting tools are set by the set pins in the guide plates best shown in Figure 4.
In further describing, the action of the rod Z. is made to work in the bush A¹ the
said bush having one end bored to fit the end of the rod Z. an easy fit, the other
end of the bush A' being tapped and contains a screwed rod B' and revolves with
the bush A' the said bush having a feather fitted to it and works in the hollow of
the rotating spindle G. The other end of the rod B₁ has teeth filed upon it and
made hard in the event of the tools N, N being blunt and the stud should be
screwed up the cutting tools C, C first: the rod B₁ being close up to the cutting
tools C. C comes in contack with the point of the stud; the spring under the
chisel pointed stud in the bracket C' holds the rod Z by the notch E¹. With
the gripping action of the tools C. C and the biting of the rod B₁ on the end of
the stud carries it up the tools N, N, when the screwed stop being set to the
required length jams the stud there and overcomes the spring in the bracket C¹.
and the cutting tools C. C continues screwing until thrown open by the finger U
compressing the spring against the ajustable stop S. on the bar R.
The stud B. is then taken out and a holder suitable for holding the head of a
tap or rimer is then put in, and a centre is in the place of the rod B¹ to carrie the
end of the tap, the tools being ajusted they are then brought to bare upon the tap-
until cut to a full thread the cutting tools C, C are then taken out and the holder
and centre exchanged, the cutting tools N, N are in there turn cut in the same-
manner by the leavers A' and Y, when they are taken out and finished in the
usual manner.
The opposite end of rod Z. is supported in the eye bracket C¹, and has an,
ajustable stop D' to bring back the rod Z to its starting place at the same time the
finger U. strikes the second stop S. the chisel pointed stud enters the notch E' as.
shown in brackets C' and V. The rod Z. and bar R. are then held in position.
until compresed by the advance movement of the finger U. and the same action
gone through again.
In making the cutting tools care should be taken in fitting the cutting tools C, C
and N, N in there places.
Having now particularly described and ascertained the nature of my said.
invention and in what manner the same is to be performed, I declare that what I
claim to be new is
The combination of parts forming the machine having two cutting tool heads by
which I am enabled to screw the two ends of studs at one operation substantially
as described and illustrated on the accompanying sheets of drawings.
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