A New or Improved Apparatus for Trimming the Heads of Bolts and other Articles.
Year: 1890

page_text: Date of Application, 24th Nov., 1890
Complete Specification Left, 24th Aug., 1891-Accepted, 10th Oct., 1891
PROVISIONAL SPECIFICATION.
A New or Improved Apparatus for Trimming the Heads of Bolts
and other Articles.
I, JAMES HOLLINGWORTH, of Dobcross, in the County of York, Power Loom
Maker, do hereby declare the nature of this invention to be as follows (which
invention has been communicated to me from abroad by George Webb, of
Pawtucket, Rhode Island, one of the United States of America, Engineer) :-
:-
In
This invention has reference to a new or improved arrangement of machinery for
trimming circular heads of bolts or other circular or disc-shaped articles.
constructing a machine according to this invention, I employ a central spindle driven
by cone pulleys or other suitable mechanism, to which spindle is connected, by a
universal joint, a hollow tube containing a die or clutch for holding the shank of a
bolt whilst it is made to revolve against a cutter for trimming the edge of the bolt.
Both the tube and the clutch may be changed for receiving the shanks of bolts of
different sizes. During the time the main spindle is revolving, the universal joint
at the end thereof enables the operative to hold the hollow tube with his hand for
the purpose of introducing a bolt therein and removing it therefrom. Each time
the shank of a bolt has been inserted into the end of the revolving hollow tube, the
workman operates a hand lever, causing the cupped end of a horizontal spindle
suitably mounted to engage with the head of the revolving bolt; the movement of
the same lever also causes a cutter to be slided into contact with the head of the
revolving bolt, which is trimmed thereby; an adjusting set screw or other device
being employed to determine the forward movement of the cutter so that no more
than a fixed amount can be taken off the head of the bolt. When the bolt has been
trimmed, the hand lever is moved back, whereupon the attendant removes the
trimmed bolt and inserts another, when the lever is again operated for the purpose
of bringing the parts into action again to trim a fresh bolt, the construction of the
apparatus being such as to enable the operative to trim the heads of bolts or other
articles with great rapidity.
Dated this 22nd day of November 1800.
TASKER & CROSSLEY,
Halifax and Huddersfield, Agents.
COMPLETE SPECIFICATION.
A New or Improved Apparatus for Trimming the Heads of Bolts
and other Articles.
I, JAMES HOLLINGWORTH, of Dobcross, in the County of York, Power Loom
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 (which invention has been communicated to me from abroad by
George Webb, of Pawtucket, Rhode Island, one of the United States of America,
Engineer) =
This invention has reference to a new or improved arrangement of machinery for
trimming circular heads of bolts or other circular or disc shaped articles. In
constructing a machine according to this invention, I employ a central spindle
driven by cone pulleys or other suitable mechanism, to which spindle is connected,
by a universal joint, a hollow tube containing a die or clutch for holding the shank
of a bolt whilst it is made to revolve against a cutter for trimming the edge of the
bolt head.

page_text: Such being the nature and object of my said invention, I will now describe the
same more fully and for that purpose refer to the accompanying drawings wherein
Fig. 1 is front elevation of my improved machine for trimming the heads of bolts
or other articles; Fig. 2 is plan view. thereof and Fig. 3 end view of same.
A represents the framework of the machine, on which is mounted a stationary
headstock B and cone pulleys C having a revolving central spindle D to which is
attached by universal joint F a tube G provided in the end or orifice with a clutch a
for receiving the shank of a bolt b the head of which requires the edge thereof to
be cut off or trimmed and this is effected by means of a cutter H, the bolt head
meanwhile being held fast or in position by a cup or hollow place formed in the end
of the spindle carried by another stationary headstock J. The cupped end of the
spindle I is forced against the head of the bolt by means of lever K pivoted at L
the lower end of which is depressed at a given time through the medium of lever M
which also and simultaneously therewith places the cutter H against the edge of
the bolt head. The two movements of forcing the cupped end of spindle I against
the head of the bolt and that of placing the cutter I into contact with the bolt
head are effected by raising hand lever M in the direction of the arrow marked
thereen in Fig. 3, which hand lever causes the plate or foot N to press upon the top
of the lower end of lever K causing the opposite end thereof to force the cupped
end of the spindle I against the bolt head. At the same time as this takes place
the pedestal or bracket O is made to advance so as to place the cutter H against
the bolt head, which, at that time is revolving, whereupon the edge is quickly
removed or trimmed and this operation can be quickly performed, as the main
spindle D is not stopped each time a bolt is changed, but continues to revolve, the
universal joint F at the end thereof enabling the operative to hold the tube with his
hand whilst the spindle D is revolving for the purpose of removing one bolt and
introducing another. An adjustable set screw c or other equivalent device is
screwed into the plate P which is made to abut against the framework A each time
the hand lever is operated in an upward direction, by which means the forward
movement of the cutter is determined so that no more than a fixed amount of metal
can be taken off the head of the bolt.
The bolt head and cutter are supplied with lubricant from a reservoir Q which
lubricant is pumped therefrom into an elevated reservoir or tank R, such lubricant
being supplied continuously so long as the machine is at work. The oil after being
used gravitates back to the lower reservoir Q from which it was originally pumped,
so that the oil is continuously being used over again.
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 :-
Firstly. In a machine for trimming the heads of bolts and other circular articles
the employment of a tube G connected to a revolving shaft by a universal joint F
for the purposes described and illustrated in the drawings.
Secondly. In a machine for trimming the heads of bolts and other circular
articles, the employment of a tube G connected to the main shaft by a universal
joint, in combination with a sliding cupped spindle for keeping the bolt in position
all as described.
Thirdly. In a machine for trimming the heads of bolts and other circular articles,
the employment of a tube G connected to the main shaft by a universal joint, and a
sliding cupped spindle for keeping the bolt in position, in combination with a cutter
all operated as described.
Fourthly. In a machine for trimming the heads of bolts and other circular
articles, the employment of a tube connected to the main shaft by a universal joint,
together with a sliding cupped spindle and a cutter, such said cupped spindle and
cutter being simultaneously brought into position by the movement of a handle such
as M, all arranged in the manner described.
Fifthly. The general arrangement and combination of machine for trimming the

page_text: heads of bolts and other circular articles, comprising the hollow tube G connected
by a universal joint to the main spindle, together with cupped spindle I in combina-
tion with the means described herein for automatically supplying the cutter with
lubricant.
Thi
1
1901
TASKER & CROSSLEY,
Halifax and Huddersfield, Agents.