Improvements in Pipe Stocks.
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improvements in Pipe Stocks.
I, DEWITT BEANE, of Newark, Essex, County and State of New Jersey,
United States of America, Machinist, my Post Office address being No. 111, Summer
Avenue, Newark, New Jersey, U.S.A., do hereby declare the nature of this inven-
tion, and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
The object of this invention is to more conveniently and readily adjust and secure
a die in position in a pipe stock, reduce the cost of construction, render the pipe
stock more durable and efficient than those now in use.
The invention consists in the improved pipe stock and arrangement and combina-
tion of the various parts thereof substantially as will be hereinafter more fully set
forth and finally embodied in the claims.
Referring to the accompanying drawings in which like letters of reference
indicate corresponding parts in each of the several figures
Fig. 1 is a top plan view of an improved pipe stock embodying my invention,
portions of the cap and handle holders being broken away to more clearly show the
construction;
Fig. 2 is a similar plan view of a pipe stock with round bed plate and a modified
form of holding mechanism;
Fig. 3 is a sectional view on line a Fig. 2;
Figs. 4 and 5 are sectional views of the securing pin shown in Fig. 1 when in a
closed and open position respectively and
Fig. 6, is a longitudinal side view of Fig. 1.
Referring to the accompanying drawings a indicates a bed plate, having at the
opposite ends thereof sockets a', adapted to receive handles b, b, which extend
oppositely so as to allow both hands to be used in turning the pipe stock.
The centre of the said bed plate is provided with perforation 6', to receive the
pipe to be threaded, and the upper face of said plate is formed to receive a top
plate c.
This top plate is pivoted to the bed plate by screws e passing through shoulders
or projections & in the top plate, or may be riveted thereto as shown at 8 Fig. 2.
Underneath the top plate, the bed plate is formed with a recess on one side to
receive a die, shown in dotted lines at B in Fig. 1. adapted and arranged to be in
position over the pipe opening or receptacle A as seen in Fig. 6. In Figs. 2 and 3
this recess is formed by an annular opening in the top through which the die
holder extends. As shown in Fig. 1. the die enters the recess in the direction
shown by the arrow and is prevented from passing the desired or required position
by a stop e preferably made integral with said bed plate, and stopped or seated in
a collar C shown in Fig. 6, on the under side of the bed plate. At the opening in
said side recess where the die enters there is a circular opening adapted to receive
a ping shouldered on its under side and formed with a smaller depending piece or
extension 1. Around this extension is fitted a spiral spring m upon the upper
portion thereof and is preferably arranged to be within the frame a.
Upon the lower or outer portion of the extension is adapted a winged head or
mut g and closely fitting thereon. Upon the under side of the bed plate and
surrounding the opening for the smaller portion of the pin g is formed a cam pro-
jection h, on which the ends of the winged head or nut g turn or slide causing the
nut to bind on one side of the lower projection and thereby withdraw the pin g
within its socket and leave the recess open, free and clear for the reception of the
die as shown in Fig. 5.
As soon as the die has passed into the recess receptacle arranged for it as shown

page_text: in Fig. 1 and the nut g' has been turned backwards or loosened, the pin under the
action of the spring m is returned to its normal position as shown in Fig. 4 and this
in connection with tlie stop c', holds the die in proper.position in the recess in the
bed plate.
In order to strengthen and make more firm the connection between the handle
portions and the pipe receptacles and to enable it to resist the strain, the bed plate
is constructed with braces or shoulders D D', as shown in Fig. 6.
In the side of the receptacle to receive the pipe to be cut is arranged a thumb
screw Kworking in a threaded slot in a lug or projection on the bed plate as
shown in Figs. 1 and for guiding the pipe while free to turn.
In the construction shown in Figs. 2 and 3 the top plate is provided with a large
annular opening through which the die or die holder extends and rests upon the
bed plate and held thereon by the top plate, a ratcheted flauge 2. lying between the
"bed plate and the top plate.
At one side of this flange 2 is a shoulder 3 having bearings in the large opening
in the bed plate, while on the other side of the flange is another shoulder 4 as
clearly shown in Fig. 3. At the centre of the holder is a pipe passage 5 through
which the pipe to be cut passes, and is guided in position while free to turn by set
screw 6 or a set screw 6. Bushing is employed.
The die chamber has a lateral passage 7 through which the die may be inserted
in position and extends between the studs 8. At one side or end of said passage is
a stop 9. At the mouth of the passage 7 is arranged a catch 10 with lip 11 to
engage the edge or side of the die when turned down, as shown in Fig. 3, to prevent
the same from falling out. The die chamber is approximately of a shape corre-
sponding with the die plate, so that the plate cannot turn therein in the operation
of cutting.
To prevent the holder from turning in its bearings I have provided a stop or
key 12, adapted to engage in notches or recesses in the shoulder of the holder.
This spring actuated key 12 is only used in what is known as "hand-over-hand-
cutting -or when the pipe stock is turned continually in one direction, and in such
cases the pawl and ratchet device is dispensed with.
To allow of the die and holder being used in cutting either a right or left hand
screw a double pawl 13, is provided with pawl teeth 14, 14 and a bearing 15 to
enter the spring 16. The said pawl is also provided with a finger piece 17 extending
through a slot 18 in the top plate, and thus the pawl may be turned so that either
of the teeth 14 may be brought into engagement with the ratchet 2.
The spring 16 is an independant and separate piece from the pawl, so that the
pawl can readily be changed or shifted without disturbing the spring.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what 1
claim is -
1. In a pipe stock the combination of a bed plate and top plate with a die
holder connected to a toothed ring a notch or recess, and a spring actuated holder
adapted to engage in said notch and hold the die holder in position automatically,
substantially as set forth.
2. In a pipe stock the combination of a bed plate a top plate, a die holder,
having a die receptacle and a lateral passage leading to said die receptacle, and a
catch to prevent the withdrawal of the die plate, substantially as set forth.
3. In a pipe stock the combination of a bed plate and top plate, a ratcheted die
holder, and a double pawl having a finger piece, and arranged in a chamber
between said plates, a spring, substantially as set forth.
4. In a pipe stock the combination of a bed plate, a ratcheted die holder, and a
pawl, the said die holder being provided with a lateral passage leading to the die
receptacle or chamber, the said chamber having at the side opposite the lateral
passage a stop, and at the other side suitable guides or ways substantially as set
forth.

page_text: 5. In a pipe stock the combination with a die or cutter holder and a stock
adapted on one side to receive the cutter holder, of a locking device consisting of a
stop in the bed plate opposite the opening, and against which the cutter holder rests
a sliding pin opposite said stop a winged nut on said pin, and cam projections on
said bed plate, all said parts being adapted to operate substantially as described,
and for the purposes set forth.
6. In a pipe stock the combination with a stock adapted to receive a die or cutter
holder of an adjustable holding pin, and a winged nut on said pin, constructed and
adapted to operate substantially as described and for the purposes set forth.
7. In a pipe stock a device for securing a dic or cutter holder in the socket in
the stock, consisting of an adjusting controlling pin, a spring adapted to hold said
pin its normal position, a winged nut on said pin, and cam projections on the bed
plate on which said nut is adapted to slide, all said parts being arranged and
adapted to operate as described and for the purposes set forth.
Dah 10th 1 of 1001
C. R. BONNE & Co.,
57 & 58, Chancery Lane, W.C., Authorised Patent & Trade Mark Agents.