Improvements in Apparatus for Releasing the Dies and thereby Screwing Bolts to a Predetermined Length in Screwing Machines.
Year: 1891

page_text: Date of Application, 6th Jan., 1891
Complete Specification Left, 6th Nov., 1891-Accepted, 19th Dec., 1891
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Releasing the Dies and
thereby Screwing Bolts to a Predetermined Length in
Screwing Machines.
Í FREDERICK HANSON of the firm of Messrs. Frederick Hanson & Co.
Hope Iron Works Halifax in the County of York Engineer and Tool Maker, do
hereby declare the nature of this invention to be as follows:-
-
My invention is applicable to screwing machines such as Brown's where the
die box for holding the dies revolves, and the dies are released without stopping
the machine.
I employ according to my invention an adjustable inner spindle or rod which
projects through from the outer end of the revolving spindle up to a predetermined
distance from the dies which are held in position in a suitable die box in the front
end of the spindle, the aforesaid rod or spindle within the hollow spindle is operated
by the end of bolt or article to be screwed, the latter being held in the carriage and
drawn forward by the dies, so that soon as the end of both comes in contact with
the spindle rod it presses the latter which by lever and connecting rod operates and
releases a catch lever which in turn by means of a weighted lever and connecting rod
connected to the die box lever withdraws the die box cam, the angle of the latter
being made of such inclination as to be easily withdrawn, thus allowing the dies
by means of the ordinary blade spring used to withdraw the dies to be free to
operate and thereby withdraw the dies. For the purpose of bringing the inner rod
or spindle into the normal position, to be operated upon by the end of bolt or other
article to be screwed I employ a spiral spring, one end of which is attached to the
bracket carrying the stud on which the first lever from the end of spindle rod is
connected, the other end of the spiral spring being attached to the first lever
thereby drawing back the lever and rod to the position ready for another bolt or
screw to be operated upon.
Dated this Third day of January 1891.
FREDK. HANSON.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Releasing the Dies and
thereby Screwing Bolts to a Predetermined Length in
Screwing Machines.
1 FREDERICK HANSON of the firm of Messrs. Frederick Hanson & Co.
Hope Ironworks Halifax in the County of York Engineer and Trol 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 :-
In order that the description may be fully understood I have hereunto annexed
COMPLETE SPECIFICATION.
Improvements in Apparatus for Releasing the Dies and
thereby Screwing Bolts to a Predetermined Length in
Screwing Machines.
I FREDERICK HANSON of the firm of Messrs. Frederick Hanson & Co.
Hope Ironworks Halifax in the County of York Engineer and Trol 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 :-
In order that the description may be fully understood I have hereunto annexed
one sheet of drawings in which
Figure 1. is a front elevation of part of screwing machine.
Figure 2. plan of Fig. 1.
Fig. 3 is back end elevation, and Fig. 4. is front end elevation partly in section
through a. b. Fig. 1.
Fig. 5 is sectional elevation of die box enlarged.
W
1 inclusives are drawn 1th full size
Fio is drawn 1th full size

page_text: wheel c at the back end, the latter receives its motion from pinion and cone pulley
at back of machine. is the adjustable inner spindle supported within the
spindle a by bushes e. f. One part of the bush f projects within the back end of
spindle a and its other end is supported and kept from rotating with the spindle a
by the lever g and pin the latter projecting into a hole ; in the bush. The
outer end of the bush is screwed and made conical and two or more slits are
made in it so that the conical bush k when screwed on the part 2 of the bush
holds the inner spindle d in any position required according to the length of bolt
to be screwed the bush k and the part 2 of the bushf forms a gripping chuck.
The operation is as follows:-
When the bolt has been screwed to its proper length the end comes in contact
with the end m of inner adjustable spindle d. The latter in its backward movement
operates by the pin the lever which by rod N and lever P releases the catch Q
from projecting piece R on hand lever S. The latter is then free to be operated
upon by the weighted lever T which by rod U and double forked lever V which
by clip W withdraws the part X of the die box thereby allowing the ordinary
blade spring to release the dies from the bolt. The angle Y of the die box
such that the part X is easily withdrawn.
being
To put dies in position for another bolt the operator pulls the hand lever S and
closes the part X of die box at the same time the spiral spring 2 on the bracket 21
draws the lever C forward and inner spindle into proper position to be operated
upon and by the rod N and lever S puts the catch Qin proper position. The
lever P is then brought into position by the operator so that the catch Q locks
the projecting piece R thereby preventing the hand lever S being released except
by the attendant or the bolt being screwed to its proper length.
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
I claim is
1st. The automatic releasing motion as herein substantially described and
illustrated.
2nd. The inclined angle Y of die box & in combination with the weighted lever T
as and for the purpose herein set forth and as illustrated.
3rd. The inclined angle Y of die box bits application to screwing machines
such as described and illustrated with revolving die box for easily releasing
the dies.
Dated this Fourth day of November 1891.
FREDK. HANSON.