Improvements in Printers' Quoins.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Printers' Quoins.
We, FREDERICK ULLMER, Printer's Engineer, Standard Works, Cross Street,
Farringdon Road, London, and WILLIAM GUNSON, of 45, Medusa Road, Catford,
in the County of London, Manager, do hereby declare the nature of this invention
to be as follows:-
'
This invention for improvements in printer's quoins relates to means for locking
up or adjusting forms in the chase, and consists essentially of two wedge shaped
pieces so connected together that the thin end of one is adjacent to the thick end
of the other and adapted to be slid on each other by means of a suitable key in
order to adjust their combined depth to suit the distance between the form and
the chase. One wedge piece is formed with a longitudinal dovetail feather which
fits into a corresponding groove in the other piece thereby inseparably connecting
the two pieces together while permitting them to slide freely on each other. Both
pieces may be provided with toothed racks to permit of their being forced to
slide on each other by means of a pinion key inserted between the two parallel racks
in a well known manner; but I prefer to form the rack on one or both sides of
one wedge piece only, a corresponding circular recess or recesses being formed in
the other piece into which a pinion key may be inserted so as to gear with the
said rack and cause the two wedges to slide on each other as desired. A pin or
stud in the end of the feather prevents the two parts becoming detached.
Dated this 17th day of January 1898
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.
Improvements in Printers' Quoins.
We, FREDERICK ULLMER, Printer's Engineer, Standard Works, Cross Street,
Farringdon Road, London, and WILLIAM GUNSON, of 45, Medusa Road, Catford,
in the County of London, Manager, 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 for improvements in printer's quoins relates to means for locking
up or adjusting forms in the chase, and consists essentially of two wedge shaped
pieces so connected together that the thin end of one is adjacent to the thick end
of the other and adapted to be slid on each other by means of a suitable key in
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page_text: order to adjust their combined depth to suit the distance between the form and
the chase.
Referring to the accompanying sheet of drawings:
Fig. 1 is a side elevation of a printer's quoin constructed according to this inven-
tion and showing the relative positions of the parts when closed up. Fig. 2 is a
plan showing the relative position of the parts when open, and Fig. 3 is a cross
section of the same on the line A-B Fig. 1. Fig. 4 is an elevation of a pinion
key used for operating the quoin.
Two wedge shaped pieces a b are connected together by a longitudinal dovetail
feather and groove c d which permit of their sliding freely on each other longi-
tudinally within given limits whilst they are prevented from becoming detached
lengthwise at one end by a stop block e secured in the groove d and against which
the shortened end of the feather abuts, undue traverse in the opposite direction
being limited by the contact of the edge f of the part a against the stop shoulder g
of the part b.,
↓
"
The wedge a is formed with a recess h into which the pinion head of the kev
fits, while the wedge b has formed on its inner edge a rack m in which the said
pinion head gears so that, on turning the key 1, the wedges are caused to slide on
each other and thereby increase or diminish their total combined depth so as to
tighten or slacken the form in the chase as will be readily understood.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
1. A printer's quoin comprising two wedge shaped pieces connected together
by a dovetail feather and groove, one wedge having a recess into which a pinion
key fits while the other is provided with a rack in which the head of the said
pinion gears and the two pieces prevented from becoming detached by end stops
substantially as described and for the purpose specified.
2. A printer's quoin composed of two wedge shaped pieces connected together
and operated substantially as described.
בד
142 1
1000
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, Agents.