IMPROVEMENTS IN MECHANICAL MEANS FOR LOCKING PRINTERS' FORMS AS WELL AS FOR MOUNTING OR FITTING PIECES ON THE BEDS OR TABLES OF PLANING MACHINES, AND FOR OTHER COGNATE PURPOSES
Year: 1868

page_text: LETTERS PATENT to Daniel Dorrity, of Pont-Audemer, in the Empire
of France, but at present residing at 3, Ile Lacroix, in the City of
Rouen, in the same Empire, Mechanical Engineer, for the Invention
of "IMPROVEMENTS IN MECHANICAL MEANS FOR LOCKING PRINTERS' FORMS
AS WELL AS FOR MOUNTING OR FITTING PIECES ON THE BEDS OR TABLES OF
PLANING MACHINES, AND FOR OTHER COGNATE PURPOSES."
Sealed the 1st June 1869, and dated the 3rd December 1868.
PROVISIONAL SPECIFICATION left by the said Daniel Dorrity at the
Office of the Commissioners of Patents, with his Petition, on the
3rd December 1868.
I, DANIEL DORRITY, of Pont-Audemer, in the Empire of France, but
at present residing at 3, Ile Lacroix, in the City of Rouen, in the same
Empire, Mechanical Engineer, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MECHANICAL MEANS FOR LOCKING PRINTERS'
FORMS, AS WELL AS FOR MOUNTING OR FITTING PIECES ON THE BEDS OR TABLES
OF PLANING MACHINES, AND FOR OTHER COGNATE PURPOSES," to be as follows:-
Instead of locking printers' forms in the manner at present in use,
by imposing or ranging and fixing the pages in the frame or chase by
means of a set of furniture, consisting of slips or wedges of wood of

page_text: various dimensions, and in which, irrespective of the other objections
it is open to, a mathematical accuracy, more particularly in making
register, can hardly ever be obtained, I so contrive to effect the locking
of the forms, by means of my improved mechanical locking apparatus
as, on the one hand, to secure in each case the utmost accuracy in the
imposing, and, on the other hand, to enable the person engaged in
"making up" or in "working off" the sheet to effect with the utmost
ease and speed such unlockings as the necessity of rectifying uncorrected
mistakes may at any time call for, and which in the prevailing mode of
locking are attended with considerable inconvenience and consequent
waste of time and money.
The toothed
In constructing my improved locking apparatus or mechanical
furniture I provide a metal frame, by preference oblong, and I fit into
its centre a vertical pinion, the teeth of which being of helical or spiral
shape I cause to gear into those of two adjacent horizontal toothed
wheels or endless screws, one on each side of the pinion, and each of
these gearing into another wheel or screw of the same description and
likewise furnished with teeth or threads of appropriate shape, and
the whole of this gear may be mounted or fitted into the aforesaid frame
or casing by means of axles, or in any other manner.
wheels or endless screws being made hollow I so fit a screw of a smaller
diameter into each of them as to cause these wheels to form the nuts of
the screws or tapered spindles, so that each of these will proceed out
of or recede into its nut according to the direction in which the latter
revolves, the two inside spindles moving in one direction whilst the two
outside ones move in another. To the outer ends of every pair of
spindles I fit a thin metal plate corresponding in width and shape to
the outer surfaces of the frame or casing of the apparatus, so that one
plate may connect the two outside, and another on the opposite side of
the frame the two inside spindles with each other. By turning the
pinion by means of a key, a handle, or in any other manner I so actuate
the bi-lateral wheels or endless screws as to cause the outer plates to
advance or recede, as the case may be. It will thus be seen that the
locking operation usually effected by means of the wooden furniture
herein-before alluded to is performed with much more facility, accuracy,
and efficiency by the exterior plates of my apparatus, an infinitesimal
turn of the pinion being in this case sufficient to adjust the form to the
chase or frame with the greatest security and promptitude.

page_text: Besides applying the apparatus, herein-before described, to the locking
of printers' forms I propose to adapt the same to all cognate locking
operations, especially those by which pieces to be worked upon may be
required to be fitted to or mounted on the beds or tables of the
respective working tools; and it may thus be readily applied to planing
machines and other machines for operating upon pieces of metal, wood,
or other substances.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Daniel Dorrity in the Great Seal Patent Office ou
the 3rd June 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, DANIEL
DORRITY, of Pont-Audemer, in the Empire of France, but at present
residing at 3, Ile Lacroix, in the City of Rouen, in the same Empire,
Mechanical Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Third day of December, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-
second year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Daniel Dorrity, Her special licence
that I, the said Daniel Dorrity, my executors, administrators, and
assigns, or such others as I, the said Daniel Dorrity, my executors,
administrators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN MECHANICAL
MEANS POR LOCKING PRINTERS' FORMS, AS WELL AS FOR MOUNTING OR FITTING
PIECES ON THE BEDS OR TABLES OP PLANING MACHINES, AND FOR OTHER COGNATE
PURPOSES," upon the condition (amongst others) that I, the said
Daniel Dorrity, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention, and
in what manner the same was to be performed, and cause the same to be
filed in the Great Seal Patent Office within six calendar months next
and immediately after the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said Daniel Dorrity, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement and annexed Sheets of Drawings, that is to say :-
Instead of locking printers' forms in the manner at present in use,
by imposing, or ranging and fixing the pages in the frame or chase by
means of a set of furniture consisting of slips, quoins, or wedges of wood
of various dimensions, and in which, irrespective of the other objections
it is open to, a mathematical accuracy, more particularly in making
register, can hardly ever be obtained. I so contrive the locking of the
forms by means of my improved mechanical locking apparatus, as, on
the one hand, to secure in each case the utmost accuracy in the imposing,
and on the other hand, to enable the person engaged in "making up
or in "working off" the sheet, to effect with the utmost ease and speed
such unlockings as the necessity of rectifying uncorrected mistakes may
at any time call for, and which in the prevailing mode of locking are
attended with considerable inconvenience and consequent waste of time
and money.
وو
In constructing my improved locking apparatus or mechanical
furniture I provide a metal frame, by preference oblong, and I fit
into its centre a vertical pinion, the teeth of which being of helical or
spiral shape, I cause to gear into those of two adjacent horizontal toothed
wheels or endless screws one on each side of the pinion, and each of
these gearing into another wheel or screw of the same description and
likewise furnished with teeth or threads of appropriate shape, and the
whole of this gear may be mounted or fitted into the aforesaid frame or
casing by means of axles or in any other manner. The toothed wheels
or endless screws being made hollow I so fit a screw of a smaller
diameter into each of them as to cause these wheels to form the nuts
or female screws of the (male) screws or tapered spindles, so that each
of these will proceed out of or recede into its nut, according to the
direction in which the latter revolves, the two inside spindles moving in
one direction, whilst the two outside ones move in another. To the
outer ends of every pair of spindles I fit a thin metal plate corresponding
in width and shape to the outer surfaces of the frame or casing of the
apparatus, so that one plate may connect the two outside, and another
on the opposite side of the frame, the two inside spindles with each
other. By turning the pinion by means of a key, a handle, or in any

page_text: other manner I so actuate the bi-lateral wheels or endless screws as to
cause the outer plates to advance or recede, as the case may be. It will
thus be seen that the locking operation usually effected by means of the
wooden furniture, herein-before alluded to, is performed with much
more facility, accuracy, and efficiency, by the exterior plates of my
apparatus, an infinitesimal turn or twist of the pinion being in this case
sufficient to adjust the form to the chase or frame with the greatest
security and promptitude.
Besides applying the apparatus, herein-before described, to the locking
of printers' forms I propose to adapt the same to all cognate locking
operations, especially those by which pieces to be worked upon may be
required to be fitted to or mounted on the beds or tables of the respective
working tools; and it may thus be readily applied to planing machines
and other machines for operating upon pieces of metal, wood, or other
substances.
In the accompanying Sheets of Drawings I have shewn two arrange-
ments of my apparatus as applicable to the locking of printers' forms.
On Sheet I., Figure 1 is a plan and Figure 2 a sectional elevation
(taken along the line X, Y,) of a middle size apparatus; and in Sheet II.,
Figures 3 and 4 are respectively a plan and a sectional elevation (also
taken along the line X, Y,) of a full-size apparatus of the same description.
On Sheet I. the open position is shewn in full lines, and the closed
position in "dot and dash" lines; on Sheet II., on the contrary, the
dot and dash lines shew the apparatus partly open, and the full lines
closed.
In the following description identical parts are denoted by the same
letters of reference.
The frame A of the apparatus consists of two metal plates a, a,
Figures 2 and 4, held together by means of screws of bolts B, B. The
pinion or central toothed wheel C being furnished with helical, spiral,
or rectilinear teeth, as herein-before described, works within the
bearings D, D, of the frame, being mounted therein or fitted thereto by
means of naves or bosses d, d, and is caused to turn or rotate by inserting
a key of suitable shape in the centre e thereof. By the pinion C are
actuated the hollow, taper, or square screws or screw wheels E, E, F, F',
working on both sides of the pinion, and being fitted to the frame by
means of bosses G, G. Within the hollow interior of the screw.

page_text: wheels E, E, F, F, and bosses G, G, forming female screws, are caused
to work the male screws H, H', I, I', the tape of which may likewise be
of either triangular or rectangular shape. The length of these screws and
consequently of the bosses G, G, is determined by the size of the apparatus,
and thus in the arrangement shewn in Figures 3 and 4 the cylindrical
parts L, L', of the frame of the apparatus are intended to hold a portion
of the bosses. To the extremities of the male screws H, H', I, I', are
fitted the metal plates J, K, and it will thus be seen that by causing
the pinion C to turn or revolve in any given direction the consequent
revolution of the wheels E, E, F, F, will cause the screws H, I, to
advance or recede, as the case may be, and a rectilineal motion being
thus imparted to the plates J, K, bearing respectively upon the outside
of the form and the inside of the frame or chase, an almost imper-
ceptible turn or twist of the pinion C will suffice to lock or unlock, to
loosen or tighten the forms. In instruments of medium or large size
I prefer to secure the rectilineal motion of the plate K bearing upon
the form by means of spindles or guide picces M, M', of cylindrical or
any other suitable shape, which may be caused to move in lugs or
bearings N, N, forming a part of the frame A, and which may be
dispensed with in instruments of smaller size.
I do not mean to confine myself to the particular form or shape in
which my said apparatus has been shewn in the accompanying Sheets
of Drawings, it being equally consonant with the nature and object of
my Invention to give the apparatus any shape differing from the one
shewn, yet being suitable for the purpose for which it is designed. Thus
the plates bearing upon the forms may be made longer than they are
shown in the annexed Drawings, or two or more instruments may be
coupled and furnished with one and the same plate bearing upon a
whole side of a form; also instruments of the same or different shape,
but constructed upon the same principle, may be used or employed like
quoins to adjust the distance between any two pages of a form, thus
dispensing with the instruments substituted for the furniture between
the form and the frame.
I also propose to use or employ instruments or apparatus of the same
or similar shape to the one illustrated in the accompanying Sheets of
Drawings, for mounting or fitting pieces of metal, wood, or other
substances to be worked upon on the beds or tables of working machines
such as lathes, planing machines, and so on...

page_text: Having now described the nature of the said Invention, and illustrated
the same in the accompanying Sheets of Drawings, I wish it to be
understood that I do not claim the use or employment of metal instead
of wood for the furniture hitherto in use in printers' forms; neither do
I claim the use of mechanical means generally for adjusting printers'
forms to frames, being aware that such means have been in use hereto-
fore; but what I claim is,-
First. The use or employment of one or more instruments of the
nature and shape herein-before described and illustrated for the purpose
of locking and unlocking printers' forms in frames or chases, or adjusting
the distances of several pages of one and the same sheet from each
other.
Second. The use or employment of pinions, screw wheels, and male
and female screws for the purpose and in the manner hercin-before
described and illustrated in the accompanying Sheets of Drawings.
Third. The use or employment of apparatus or instruments of the
kind, shape, or form described and illustrated in the accompanying
Sheets of Drawings, for the purpose of mounting, fitting, or adjusting
such pieces as may have to be operated upon by the respective working
tools on beds, tables, or frames of lathes, planing machines, or other
working machines.
In witness whereof, I, the said Daniel Dorrity, have hereunto set
my hand and seal, this Twenty-second day of May, in the year of
our Lord One thousand eight hundred and sixty-nine.
Witness,
THOMAS MANN.
(L.S.) DANIEL DORRITY.