in indicator and other fastenings for door
Year: 1887

page_text: Date of Application, 22nd Jan., 1887
Complete Left, 24th Oct., 1887
Complete Accepted, 30th Dec., 1887
I. ARTHUR ILLIDGE, of 16 Church Street, Wolverhampton in the County of Stafford,
brass founder, do hereby declare the nature of this invention to be as follows:-
:-
This invention refers to improvements in indicator and other fastenings for doors,
and relates in part to an improvement in the invention described in the provisional
specification lodged with my application for letters patent made on the 25th day of
November 1886 and numbered 15,386, under the title of "Improvements in indicator
bolts or fastenings for doors."
The present invention relates. first, to a combination of horizontally-sliding bolt
and vertically-sliding indicator; second, to a horizontally-sliding bolt capable of being
moved forward and backward by means of a handle from the inside, and of being so
moved by means of a key from the outside, in case of the sudden illness of the
occupant of the apartment, or for other purpose, and, also, of a combination therewith
of a vertically-sliding indicator; third, to a horizontally-sliding boit capable of being
moved forward and backward, by means of a handle, from the inside, for a part of its
shoot, and of being moved such part, and also the remaining part of its shoot, by
means of a key from the outside, and, also, of a combination therewith of a vertically-
sliding indicator in such a manner that an indication may be given not only when the
apartment is vacant and engaged, but also when it is completely locked from the
outside; fourth, to the adaptation of a sliding indicator to the invention described in
my said former specification; and fifth, to an indicating arrangement applied specially
to prison door locks.
According to the first part of this invention, an ordinary horizontally-sliding bolt,
constructed either with a round bolt so that the handle may be turned down in the
usual manner at each end of the stroke, or formed flat or rectangular in section, has a
transverse lever pivotted between lugs projecting at the back of the plate, so as to pass
through the thickness of the door. Part of the length of the bott intermediate
between the ends is formed, in the case of the round bolt, tapering smaller towards
the forward end, and in the case of the flat bolt or bolt of rectangular section is,

page_text: preferably, slotted the slot enlarging in width towards the front end, or it. may be
formed with a part narrowing gradually towards the front end, corresponding to the
tapering part aforesaid. The inner end of the transverse lever is forked to clip easily
around the larger end of the tapering part of the round holt (or of the flat bolt, or
bolt of rectangular section) or is made plain to fit easily within the narrower end of
the slot in the flat bolt or bolt of rectangular section. The outer end of the lever is
formed to engage with a projection on the back of a vertically-sliding index plate, and
thus when the bolt is back or unfastened the weight of the index plate allows it to fall,
and depress the outer end of the lever and raise the inner end until the lower prong
of the fork is stopped against the underside of the lesser diameter of the tapering
part of the round bolt, (or of the lesser width of the tapering part of the flat bolt, or
bolt of rectangular section) or until the plain inner end of the lever is stopped against
the upper edge of the larger width of the slot, as the case may be. When the bolt is
shot forwards the inner end of the lever is raised by the upper side of the enlarging
diameter of the tapering part of the round bolt, (or of the enlarging width of the
tapering part of the flat bolt, or holt of rectangular section) or by the lower edge of
the narrowing part of the slot, in the flat bolt, or bolt of rectangular section, as the
case may be, and thus the index plate is raised. The index plate slides in a suitable
case or cover, having a slot in front for the display of the word "engaged" when the
bolt is shot, or other word or words as required.
An indicator bolt constructed as above described may be used either right or left-
handed as required. If it is not required to be either-handed, or reversible, the part
described as tapering may be simply inclined instead of tapering, and the slot may be
formed inclined instead of tapering in width.
According to the second part of this invention, the flat bolt or bolt of rectangular
section, aforesaid, may be moved forward and backward from the inside by means of a
handle in any usual or convenient manner, and may in addition thereto be constructed
and fitted, in any ordinary or convenient manner, so as to be capable of being fastened
and unfastened by means of a key from the outside, such as when required for a
railway station lavatory closet; and such fastening may be used with or without the
indicator. A convenient application of this part of my invention consists in operating
the bolt by means of a follower upon a spindle carrying a knob at its inner end, and
formed at its outer end to receive a key.
According to the third part of this invention, a sliding bolt is employed, which is
capable of being moved forward and backward from the inside by means of a handle
in any ordinary or convenient manner, for a part of its shoot to fasien and unfasten
the door, and of being moved such part, and also the remaining part of its shoot to
lock it, by means of a key from the outside, in any ordinary or convenient manner,
and an inclined slot or an inclined bar is formed in or upon the bolt, and the inner
end of a transverse lever, pivotted in the manner above-described engages with such
slot or bar, while the outer end of such lever engages with a lug on the back of a
vertically-sliding index plate at the face of the door. This index plate exhibits through
the slot in its case or cover the word, "vacant," engaged," or locked, as the case
may be, or other word or words as required, there being three positions of the index plate
corresponding, respectively, to the three positions of the bolt. This fastening may be
used with or without the indicator. A convenient application of this part of my
invention consists in operating the bolt from the inside by means of a plain handle
connected direct to the bolt, or acting thereon through the medium of a follower, and
forming and fitting the bolt for exterior operation by the key, as if for double-locking,
but with the levers or tumbler provided with a long slot or gating to allow of the
movement of the bolt for a part of its shoot when operated from the inside.
"
According to the fourth part of this invention, a sliding indicator is applied in lieu
of the disc indicator described in my said former specification, to the bolt or fastening
described in such specification, by fixing upon the indicator spindle of such bolt or
fastening a cam and gearing such cam between suitable lugs or flanges, or equivalent
parts, on the back of the sliding index plate. In this case the indicator may slide
horizontally, if desired.

page_text: According to the fifth part of this invention, an opening is formed through the
front plate of a prison door lock, and an index block or plate is mounted on the bolt
tail in position behind the opening, aforesaid, and such index block or plate is enamelled
or otherwise marked at its face to indicate the numerals 1, 2, 3, etc., or other signs
indicating that the bolt is simply latched, or is locked singly, doubly, or trebly, etc.
The position of the index block or plate on the bolt in relation to the opening through
the front plate is, of course, such as to shew the proper numeral or sign at the back of
such opening corresponding to the position of the bolt.
The index block or plate may, if desired, be formed solid with the bolt or be rigidly
fixed thereto, but it is preferred to connect it with the bolt by entering a lug on the
bottom of the index block or plate within a corresponding notch in the upper edge of
the bolt-tail. If the index block or plate is enamelled the enamelled part may be con-
veniently recessed somewhat back from plain metallic ends so as to prevent injury to
the enamelled face resulting from the movement of the block or plate.
Dated this Twenty-first day of January 1887.
STEPHEN WATKINS,
Wolverhampton,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Indicator and other Fastenings for Doors.
I, ARTHUR ILLIDGE, of 16 Church Street, Wolverhampton in the County of Stafford,
brass founder, 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, reference being had to the accompanying drawings and the letters
of reference marked thereon (that is to say):
:-
This invention refers to improvements in indicator and other fastenings for doors,
and relates in part to an improvement in the invention described in the complete
specification lodged in pursuance of my application for letters patent made on the
25th day of November 1886 and numbered 15,386, under the title of "Improvements
in indicator bolts or fastenings for doors."
The present invention relates, first, to a combination of horizontally-sliding bolt and
vertically-sliding indicator; second, to a combination of horizontally-sliding bolt,
capable of being moved forward or backward by means of a handle from the inside of
an apartment to which it may be applied, and of being so moved by means of a key
from the outside of such apartment, in case of the sudden illness of the occupant of
the apartment, or for other purpose, with a vertically-sliding indicator; third, to a
horizontally-sliding bolt capable of being moved forward and backward, by means of
a handle, from the inside of an apartment to which it may be applied, for a part of its
shoot, and of being moved the entire length of its shoot, by means of a key from the
outside of such apartment, and, also of a combination therewith of a vertically-sliding
indicator in such a manner that an indication may be given not only when the apart-
ment is vacant and engaged, but also when it is completely locked from the outside ;
and fourth, to the adaption of a sliding indicator to door fastenings constructed and
operating substantially as described in my said former specification.
The first part of this invention is illustrated, according to four modifications, by the
drawings on sheet 1, and figures 9 and 10 of sheet 2 herewith. Figure 1 is a vertical
section, on linea a of figure 2, of a round bolt and indicator combined herewith, and
figure 2 is a sectional plan on line xa of figure 1. An ordinary round bolt A,
carried within a barrel B in the usual manner, has a part a formed tapering smaller in
diameter towards its forward end. A transverse lever b, pivotted between lugs cc at
the back of the plate C of the barrel, is formed of a forked or double-horned shape d d
at its inner end, and at its outer end is formed to enter easily within an opening
formed in a projection e on the back of vertically sliding index plate D which when
in its downward position, as shewn, indicates through a slot in the indicator case E
that the apartment to which the bolt is applied is vacant, and in its upward position
indicates, through the same slot, that the apartment is engaged. The weight of the
index plate D and of the outer end of the lever tends constantly to maintain the
lower horn d against the underside of the tapered part a of the bolt, and consequently

page_text: "
when the bolt is drawn back, as shewn, such horn is against the smaller part of the
part a, and in such position of the lever d the index plate D is in its downward
position, as shewn. When the bolt is shot forwards the increasing diameter of the
part a of the bolt depresses the inner end of the lever and thus raises the index plate.
This combination of bolt and indicator is reversible for a door opening the opposite
hand, by simply turning the complete bolt, with the lever pivotted thereto, upside
down, in which case, what was formerly the upper horn d becomes the lower and
bears against the underside of the tapering part of the bolt. One horn only, or an
equivalent projection of the lever on the inner side of its fulcrum, is, of course,
sufficient for the purpose set forth, if the bolt is not required to be reversible, or
double-handed. In order to give an adjustment of the length of the lever b, to suit
varying thicknesses of door, the outer end g may be formed separately from the rest.
of the lever, and be screwed therein, as shewn. It will be seen that this bolt may be
readily turned at each end of its stroke to bring the knob into the side notches of the
barrel, as is usual with this class of bolt. A front elevation of the indicator is shewn
by figure 27 (sheet 4) in which the index plate shews the word "vacant" through
the slot in the front of the case. As the index plate is raised in the manner before
described the word "engaged will shew through the slot in place of the word
"vacant." Referring to figures 1 and 2, g is an enamelled plate, having the indica-
tion words thereon fixed at the front of the index plate so as to move therewith. The
word " vacant may of course, be marked on the inside of the indicator case instead
of on the face of the index plate, and be simply covered by such plate as the word
engaged" is brought into position to shew through the slot.
"
Figures 3, 4 and 5, illustrate a modification of this part of my invention in which a
flat bolt is employed in lieu of a round bolt. Figure 3 is a corresponding view to
figure 2, but the indicator is omitted and the outer end of the lever shewn broken
away, for convenience of illustration. Figure 4 is an inside face view of the flat bolt,
Within the inner
or bolt proper; and figure 5 is a section on line yy of figure 3.
face of the holt proper A is formed a recess h, having on each side an inclined
face a a. The inner end of a lever b', corresponding in its purpose to the lever of
the former modification, and similarly carried, projects into the recess, and is caused,
by the weight of the index plate and the weight of its outer end, to bear up against
the upper inclined face a. This inclined face operates the lever in the same
manner, and for the same purpose, as the lower side of the part of the bolt A
operates the lever before described; and the parts may be reversed in this case
also, as in the previous modification. One inclined face only is necessary, if the
bolt is not required to be reversible, or double-handed. It is preferred to form a
narrow straight part into which the inner end of the lever enters when the bolt
is shot out. The inner end of the lever is in this case formed plain, instead of double-
horned as in the previous modification. A stop to the endway movement of the bolt,
in either direction, is formed by a pin screwed through the plate C of the case into
a widened out part of the recess at the back end of the bolt. A spring / of the
usual character for the purpose is carried in the forward part of the recess h to bear
against the plate and thus steady the movement of the bolt and prevent it being
moved accidently by any slight force.
Figures 6, 7 and 8 illustrate a further modification of this part of my invention,
as applied to a flat bolt. Figure 6 is a corresponding view to Figure 3, figure 7
a section taken on line y¹ y of figure 6, and figure S a corresponding view to
figure 4.
In this case two recesses are formed in the inner face of the bolt. A²
one on each side of the centre, and curved (or they may be inclined) faces a² a² are
formed in the recesses, and a lip m on the lower front edge of the lever b² (corre-
sponding to and for the purpose of the lever b, figures 1 and 2) projects within one of
the recesses and bears up against the curved face therein. This bolt is not turned
over to reverse it, but such purpose is accomplished by simply tilting up the lever to
bring the lip m out of the recess into which it projects and then moving the bolt
endways until it is in position for the lip to gear with the other recess. By reversing
the bolt in this manner, what was formerly the front of the bolt becomes the tail.
A

page_text: stud through the plate C2 projecting into the upper part of one of the recesses
forms a stop to the endway movements of the bolt. This stud is, of course, withdrawn
from the recess into which it projects when it is intended to move the bolt sufficiently
to reverse it, and is removed to a second hole in proper position in the plate C2 and
advanced into the other recess when the bolt has been reversed. By the employment
of this modification the chance of the maker's name, when such is marked on the bolt,
appearing upside down is avoided.
Figures 9 and 10 illustrate a further modification of this part of my invention as
applied to a flat bolt. Figure 9 is a corresponding view to Figure 3, and Figure 10
is a section taken on line of figure 9. The bed of a shallow recess h², formed in
the inner face of the holt, is made to run out into the plane of the face as shewn at a³,
and the inner end of a lever 63 (corresponding to and for the purpose of the lever b,
figures 1 and 2) is formed with a pair of horns dd, one of which rests against the
bed of the recess h². As the bolt is shot out the inclined part a³ of the recess presses
back the horn and raises the lever, which falls again as the bolt is drawn back. This
bolt is reversed in the manner described with reference to the first two modifications.
By lengthening the index plate and indicator case in the form of indicator above
described the point at which the indication is observed may be at any desired height
above the fastening.
It will be obvious that, in lieu of the transverse lever described with reference to
this part of my invention, a pin may project outwards from the bolt through a
horizontal slot in the back of the indicator case into an inclined slot in the index-plate,
and be carried by such bolt so as to travel horizontally therewith and thus operate
the index plate in a vertical direction as the bolt is moved horizontally. Such a
modification is illustrated by figures 25 and 26 on sheet 4 herewith, of which figure 25
is a transverse vertical section through the centre of the combined bolt and indicator,
and figure 26 a back elevation of the indicator case, and section through the pin. A
pin projects from the bolt L through a horizontal slot c¹ in the back of the indicator
case and into an inclined slot c² (shewn chiefly by broken lines figure 26) in the back
of the index plate; and thus, as the bolt is moved endways, the pin travels therewith
in a horizontal position, and the part thereof which is within the inclined slot c²,
operating through the medium of such slot, moves the index plate in a vertical direction.
as required.
The second part of this invention is illustrated, according to two modifications, by
the remaining drawings on sheet 2 herewith. Figure 11 is an elevation of a bolt
fastening with the cap of the case removed to expose the interior mechanism;
figure 12 is a vertical section through the centre of such fastening and of a vertically
sliding indicator operated thereby and figure 13 a detached edge view of the follower
hereinafter described. The bolt proper F is carried to slide endways in a case G, and
a lever (corresponding to and for the purpose of the lever b, figures 1 and 2) is
pivotted so that its inner end may bear up against one of the curved (or they may be
inclined) faces a' a' formed in a recess h³ in the inner face of the bolt F. This bolt
may be operated from the exterior of an apartment to which it is applied by means of
a key, passed through an opening J through the indicator case and fitting upon, or
within, the spindle of a follower K which is fitted to gear with horns oo on the bolt F
and such bolt may be operated from the inside of the apartment by means of a knob H
fitted direct to the bolt. One of the horns forms a stop against the case to the
movement of the bolt in one direction, and a stud ja forms a stop in the other direction,
and the bolt may be reversed by simply altering the position of the stud, in which case
what was formerly the forward end of the bolt becomes the tail and the inner end of
the lever is operated by the other of the curved faces at to that by which it was
previously operated. The upper end p of the follower bears, as it is turned forwards
and backwards, against each of the horns alternately; and in order that the bolt may
be moved end ways, by means of the knob H, without also moving the follower and
without the lower part of the case being made unnecessarily wide to admit of the necessary
clearance for such purpose between the horns, one of such horns may be made to stand
forwards and the other backwards within the case and the follower be formed bowed,

page_text: as shewn, and also so that one side of the bow will pass behind one horn and the other
side pass in front of the other horn. The indicator is shewn to be provided (by way
of example only) with a glass el between the inside of the front of the case and the
front of the index plate or of an enamelled plate fixed thereto.
Figures 14, 15 and 16 illustrate a further modification of this part of my invention.
Figure 14 is a front elevation of a bolt fastening as seen from the inside of a compart-
ment to which it may be applied; figure 15 is a vertical transverse section through
the centre thereof; and figure 16 an inside view of the bolt proper. This modification,
combined with a vertically-sliding indicator which is omitted for convenience of
illustration, is substantially the same as that last above described except that the
follower necessarily moves with the bolt, which latter is carried against a plate, as is
cominon with this class of bolt, and the follower K¹ is plain and gears at its upper
end with the sides of a recess 7 formed up in the underside of the bolt G.
The third part of this invention is illustrated by figures 17, 18 and 19 on sheet 3 of
the drawings herewith. Figure 17 is an elevation of a bolt fastening in which a
sliding bolt is employed which is capable of being moved forward and backward from the
inside of an apartment to which the fastening is applied, by means of a handle in any
ordinary or convenient manner, for a part of its shoot, to fasten and unfasten the
door, and of being moved the entire length of its shoot by means of a key from the
outside to lock and unlock it. In this view the cap is supposed to be removed so as
to expose the interior mechanism. Figure 18 is a vertical section taken on line ¹¹ of
figure 17, and shews also a sliding indicator in combination with the fastening, and
means for operating the same therefrom. The tail of the bolt. L has formed therewith
or fixed thereto a plate ss. An inverted key-gating having inclined sides s¹s is
formed at the top of an opening M through the plate, and a stump t on the plate
projects into a long gating in a lever t The key-hole (shewn by broken lines
figure 17) is formed through the indicator case N and through the cap of the bolt case.
The holi L may be operated from the inside of the apartment, by means of a knob L',
for a distance corresponding to the length of the gating in the lever t2; but when it
is desired to lock the bolt from the exterior of the apartment the key is inserted and
turned in the usual direction for locking. As the key is thus turned the bit first
raises the lever and then, by pressing against the sides of the key gating, moves
the plate ss, and consequently the bolt T, forwards until the stump & has passed
through a narrow gating in the lever and has arrived at the end of a wider
gating in such lever. As the key bit passes down again, as it is further turned
in the same direction, the lever is, of course, pressed down by its spring, but it is
prevented from descending to its normal position by a shoulder me thereon coming in
contact with the stump t. When the parts are in this position the plate ss is in the
advanced position indicated by figure 19 (which is a view corresponding to figure 17,
but shewing only so much of the parts as will make the altered position thereof as
indicated sufficiently clear) with the side of the lower part of the opening M
somewhat over the key-bole, and thus, in turning down the key to withdraw it from
the key-hole the bit bears against the side n' and moves back the plate ss until the
stump passes from under the shoulder m in the lever, upon which the lever is
further depressed until the top of an upward gating a bears upon the stump t. By
this means the plate ss is moved into such position that when the key is turned back
to unlock the bolt it engages for such purpose with the side s of the key-gating. A
shoulder is formed at the inner end of the gating of the lever for the corresponding
purpose of the shoulder m³, and the opposite side o¹ of the lower part of the opening M
through the plate is formed to correspond with the side », and the key in being
turned backwards first moves back the bolt and brings the stump t under the
shoulder n³ and then bears against the side o¹ of the opening M and moves the bolt
forward again to clear the stump from such shoulder and thus bring the side of the
key-gating into position to be caught by the bit of the key as it is turned forward
again to lock the bolt. A recess in the inner face of the bolt has an inclined face a°,
and a lever 65 (corresponding to the lever b, figures 1 and 2) bears at its inner end
against the inclined face a³ and gears at its outer end with a vertically-sliding index
t

page_text: plate in the manner described with reference to the previous modifications. In this
case it will be seen that there are three main positions of the bolt, namely, (1) the
unlocked and unfastened position, (2) the position when fastened from the inside, and
(3) the position when locked from the outside. There are, consequently, three main
positions of the index plate, and the face of such plate is marked to shew the three
different indications through the slot, such as, for example, with the words "vacant,"
engaged,"
," "locked." This bolt may be unfastened from the outside by means of the
key, in case of the illness of an occupant of the apartment to which it is applied, or
for other purpose.
The fourth part of this invention consists of means by which a sliding indicator,
whether moving vertically, horizontally, or in an inclined direction, may be applied
to a cam-action bolt constructed and operating substantially as described in my said
former specification, and to any ordinary or other convenient spring latch bolt, or
other bolt, operated by a follower (or otherwise capable of being operated from both
the inside and outside of a door) and, except in the case of a cam-action bolt, provided
with a stop-piece substantially as and for the purpose described in such specification,
in lieu of the disc indicator described in such specification.
According to this part of my invention an indicator spindle corresponding to that
described in my said former specification as employed with the bolts, aforesaid,
described therein is carried through a cam which gears between suitable lugs or flanges
or equivalent parts on the index plate or block, and the spindle is of such shape (or
otherwise the cam is fixed thereto) as that it will turn the cam as it is itself turned and
thus move the index plate.
A sliding indicator for employment, according to this invention, with a cam-action
bolt constructed and operating substantially as described in my said former specification,
or with any ordinary or other convenient latch bolt, or other bolt, as aforesaid, provided
with a suitable stop-piece as and for the purpose described in such specification, is
illustrated by figures 20, 21 and 22, of which figure 20 shews a front elevation with
the cap removed, figure 21 a vertical section on line 2 of figure 20, and figure 22
a section on line y y² of figure 20. The bolt spindle of the cam-action bolt, or the
spindle of or operated by the stop-piece of the spring latch bolt, or other bolt, as
aforesaid, passes through, or into, a correspondingly formed hole g in a cam D¹
situated between slides dd formed with a sliding index plate or block D2, and thus
as the bolt spindle or stop-piece spindle, as the case may be, is turned half a revolution
to shoot or draw back the bolt, or to turn the stop-piece, the cam D¹ is turned half a
revolution also and thus operates the index-plate. The index plate may be guided in
slides d³ ³, or in any convenient manner. The indicator may be employed with
either a right or left-handed bolt, as it is immaterial in which direction the cam D' is
turned to operate the index plate.
The stop-piece described in my said former specification as employed with an
ordinary or other convenient spring latch bolt, or other bolt, as aforesaid, will answer
the purpose for which it is required if it is arranged to be turned a quarter revolution
only, that is to say, when it is turned outwards towards the front of the bolt it will
prevent such bolt from being drawn back, and when it is turned into a vertical position
it will allow of the bolt being drawn back; and figures 23 and 24 of the drawings
herewith, corresponding respectively to figures 20 and 21 before described, illustrate a
sliding indicator which may be applied to the spindle of, or operated by, such stop-
piece when employed to turn a quarter revolution only for the purpose stated. In this
case the cam 3 is formed of an elongated shape, that is longer than its width, so that
when it is turned down into either position shewn by broken lines figure 23, due to
being turned a quarter revolution from its vertical position, it will draw down the
index plate into its downward position. In this case the cam operates between an
upper slide d' on the index plate and lower slides d³ ³ projecting from the back of
the plate one on each side of the cam.
The indicators described with reference to this part of my invention have been
referred to as operating vertically, and in such case, if the index plates are made
sufficiently heavy and sufficiently easy in their vertical slides, it is not essential to

page_text: employ lower slides to receive downward pressure from the cams.
It will be obvious,
however, that these indicators may be operated in a horizontal or inclined direction, if
desired; and in whatever position they may be placed, they may, if desired, be pressed
in one direction by springs and in the other direction by the cams.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
1. The combination of a horizontally-sliding bolt, with a vertically sliding indicator,
and with a transverse lever in gear at its inner end with an inclined or curved part on
or in the bolt, and at its outer end with a sliding index plate, so that as the bolt is
moved endways in one direction the inclined or curved part thereof operates the lever
and thereby raises the index plate, the index plate and the outer end of the lever
returning automatically to their downward position again as the bolt is moved in the
opposite direction, substantially as described for the purpose set forth.
2. The modification according to which the combination referred to in the foregoing
claim is applied in the case of a round bolt, and whether such combination is arranged
to be single-handed or reversible, substantially as described, for the purpose set forth.
3. The modifications according to which the combination referred to in claim 1 is
applied in the case of a flat or rectangular bolt, and whether such combination is
arranged to be single-handed or reversible, substantially as described, for the purpose
set forth.
4. The several combined bolt fastenings and indicators, substantially as described
with reference to figures 1 to 10, inclusive, of the drawings herewith, for the purpose
or purposes set forth.
5. In a combined horizontally-sliding bolt and vertically sliding indicator the means
substantially as described with reference to figures 25 and 26 of the drawings herewith
by which the end way movement of the bolt is made to operate the index plate, sub-
stantially as described for the purpose set forth.
6. A combined sliding bolt and indicator operating in the manner referred to in
claim 1, constructed with oppositely inclined sides or faces on or in the bolt, for the
purpose of making it reversible, substantially as described.
7. The means by which a transverse lever operating in combination with a sliding
bolt and indicator in the manner referred to in claim 1 may be adjusted as to length
to suit varying thicknesses of door, substantially as described.
8. The combination of a horizontally-sliding bolt capable of being moved forward
and backward by means of a handle from the inside, and of being so moved by means
of a key from the outside, in combination with a vertically-sliding indicator operated
in the manner referred to in claim 1, substantially as described for the purpose set
forth.
9. The modifications of the combination referred to in the last preceding claim,
substantially as described with reference to figures 11 to 16 of the drawings herewith,
for the purpose set forth.
10. A horizontally-sliding bolt capable of being moved forwards and backwards, by
means of a handle, from the inside of an apartment to which it may be applied, for
a part of its shoot, and of being moved the entire length of its shoot by means of a
key from the outside of such apartment, substantially as described, for the purpose set
forth.
11. The combination of a door fastening capable of being operated in the manner
described in the last preceeding claim, with a sliding indicator operating therewith
substantially as described for the purpose set forth.
12. The door fastening substantially as described with reference to figures 17, 18
and 19 of the drawings herewith, for the purpose set forth, and whether the same is
employed with or without the indicator described and shewn therewith.
13. The combination with a cam-action bolt constructed and operating substantially
as described in my said former specification, or with any ordinary or other convenient
spring latch bolt, or other bolt, operated by a follower (or otherwise capable of being
D

page_text: operated from both the inside and outside of a door) and, except in the case of the
cam-action bolt, provided with a stop-piece substantially as and for the purpose
described in my said former specification, of a sliding indicator operating therewith
substantially as described with reference to figures 20, 21 and 22 of the drawings
herewith.
14. The combination with an ordinary or other convenient spring latch bolt, or
other bolt, operated by a follower (or otherwise capable of being operated from both
the inside and outside of a door) and provided with a stop-piece substantially as and
for the purpose described in my said former specification, but arranged to be turned
only a quarter revolution for the purpose of, alternatively, preventing the bolt from
being drawn back and of permitting it to be drawn back, of a sliding indicator
operating therewith substantially as described with reference to figures 23 and 24 of
the drawings herewith.
STEPHEN WATKINS,
Wolverhampton and Walsall,
Agent for the Applicant.