US2051986A - Door recorder - Google Patents

Description

Au 25, 1936. I H, R C L 2,051,986

DOOR RECORDER Filed Sept. 20, 1932 3 Sheets-Sheet l INVENTOR fi egr y 1? 6 00] ATTORNEYS H. R. COOL DOOR RECORDER Aug. 25, 1936.

Filed 'Sept. 20, 1932 3 Sheets-Sheet 2 INVENTOR 176777 g fi. 500/ *M A'lTORNEYfi Aug. 25,1936. HRCOOL 2,051,986

DOOR RECORDER v a; M

TTORNEYS Patented Aug. 25, 1936 UNITED STATES I 2,051,986 DOOR RECORDER Henry R. Cool, Cleveland Heights, Ohio, assignor to The .Service Recorder Company, Cleveland, Ohio, a corporation of Ohio Application September 20, 1932, Serial No. 633,962

7 Claims.

This invention relates to recording instruments for making a record showing the opening and closing of a door or for other similar purposes. The door, as to which it is desired to make a rec- 5- rd, may be the door of a building or apartment,

or the door of a receptacle such as a safe or cabinet. The invention is particularly designed for, and it is believed to find its greatest field of usefulness in, the application to the doors of stores,

10,- factories, and the like, where it is desired to keep a record showing when the door was first opened in the morning, when closed at night, and whether opened at any time outside of the usual hours of business. 'In this way information may be obtained as to the time of arrival and departure of employees, and whether the door has been opened at unauthorized times. In some instances other useful information may be obtained, as for instance, how often the door has been opened'during the day, at what hours the door is opened most frequently, etc.

. The principal object of the invention is to provide a device for the purposes described, which shall be simple and positive in operation, which shall make a record which can be easily read, in which the record chart can be quickly changed by an unskilled person, and which shall be compact and relatively inexpensive. Another object of the invention is to provide a device which may be-readily applied to a door without requiring any extensive alteration thereof, and with theuse of only the simplest tools. Other objects of the invention will appear in the course of the following description of one specific embodiment of the invention chosen to illustrate the principles thereof.

In the accompanying drawings which'form a part of this specification and which illustrate a preferred embodiment of the invention:

Figure 1 is a face view of the back part of the instrument which is attached to the door or other surface, a portion of the front part of the instrument being shown open;

Figure 2 is a vertical central section of the instrument closed;

Figure 3 is a face view on an enlarged scale showing the stylus operating devices and showing the stylus feed cam in section;

Figure 4 is a view looking into the inside of the front or cover half of the instrument showing a recording chart and also showing a portion of the back part of the instrument;

Figure 5 is a horizontal section of the instrument;

III

PATENT OFFIQE Figure 6 is a detail section taken on line 6-4 of Figure 3;

Figure 7 is a detail section taken on line 1-! of Figure 6; and

Figure 8 is a diagrammatic view in horizon- 5 tal section of a portion of a door and its frame showing a preferred form of actuating device for the instrument.

Referring to the drawings in detail, the particular form of instrument illustrated comprises 10 a casing which has a back or base portion I0 and a front or cover portion ll hinged to the back portion by the hinge 12. A look i3 is preferably provided for locking the casing closed. The back ID of the casing is secured to a door or 15 other support in any suitable manner, as by means of screws l4 (Figs. 5 an-d8) passing through holes I5 in the back (Figs. 1 and 2). Mounted in the casing and in the form of instrument shown attached to the cover portion thereof is a clock mechanism 20 on the arbor of which is mounted a table 2! adapted to carry a chart 22. The table 2| has a central boss 23 which passes through a hole in the center of the chart, and means such as the spring actuated hinged fingers 24 are pro- .2 vided for retaining the chart upon the table. The table is illustrated as of the outline shown in dotted lines in Figure 4, so that it may be used as the means for winding the clock. It will be understood, however, that any suitable form of 1 clock mechanism and chart carrying means may be employed. In the embodiment of the ,.inven tion illustrated, the casing is shown narrower than the diameter of the chart, so that the edges of the chart are curved over. The inner side walls of the casing section I0 are made very smooth so that the turned-over edges of the chart can be rotated slowly in contact therewith without injury to the chart surface. In this way a very compact casing may be utilized and still the chart may be of sufiicient diameter to be easily read. The chart is preferably provided with suitable scale divisions as indicated at 25. The side walls 26 of the cover portion H of the casing are cut away as indicated at'2'! so as not to interfere with the turned-over edges of the chart. As the chart table is carried by the cover portion of the casing the chart can be applied flat thereto and then upon simply closing the casing, the edges of the chart will slide between the I smooth walls of the casing section [0 and will be curved over in the form shown without any special manipulation on the part of the operator.

Mounted behind the flat middle portion of the chart near the margin thereof is a small spring supported platen which supports the chart beneath the point where it is engaged by the marking stylus to be described, as illustrated in Figure 2. The platen 39 has a stem 3i passing through holes in the supporting bracket 32, a spring 33 the chart table, and the casing is closed as shown in Figure 2, it will be seen that the margin of the chart passes between the guide plate 35 and the The chart and stylus may be of any platen 3i]. suitable character, but I prefer to use a wax coated chart which is adapted to have the wax thereon removed to make a record by means of a stylus having a hard metallic point. of chart and stylus are very satisfactory in use and it is unnecessary to provide inking devices or other marking means likely to give trouble. By making the inner walls of the casing where the bent-over edges of the chart travel very smooth, no injury to the waxed surface of the chart will be caused by such contact. It is to be noted that the stylus acts on the unbent portion of the chart as it passes over the platen 39 and not upon the bent-over portions thereof.

The base or back of the casing carries the stylus and operating device therefor. As illustrated,

the stylus comprises a pointed metallic member 58 which is carried by the stylus carrying yoke or rocker ll. The stylus may be attached to this yoke in any suitable manner. As illustrated it has a screw threaded stem 42 which passes through a hole in the yoke and screws into a hole a nut d3 which has 2. lug 44 projecting through a hole 45 in a lever 55 forming an extension of the yoke so as to hold the nut against rotation. The yoke is pivoted upon the pivot 55 mounted in ears 5i on the end of a carrier plate 52. A spring 53 is arranged. to hold the yoke and stylus in a normal position substantially at right angles to the back. of the casing. The stylus yoke and stylus may be rocked about the pivot by means of the lever 55, this lever having a V-shaped arm 55 which rides upon the up-turned edge 5'! of the stylus-operating slide 58. The edge 51 is provided with a cam notch 59 and when the slide is moved so that the cam notch is under the V- shaped arm 56, the arm is pushed to the bottom of the notch by the spring 53 and the stylus will occupy a position substantially at right angles to the back of the casing. If the slide is moved to one side or the other, the walls of the cam notch will force the V-shaped arm out of the notch, thereby rocking the stylus slightly to one side as shown in Figure 6. As the record chart is being slowly rotated by the clock mechanism, the stylus, as long as it is in a given position, will draw a substantially circular line on the chart. When it is rocked by movement of the slide, as described, it will make a jog in the line on the chart, as indicated at 60 (Figure 4).. The slide plate 56 is provided with slots through which pass pins 66 mounted in the carrier plate 52. The slide 58 is actuated by means of a driving pin 75, the end of which works in a slot II in the slide. The pin ill passes through a large opening I2 in the carrier plate 52, through a slot I3 in the back plate It to be described, and through a slot in the rear wall of the casing to the exterior thereof, where it is connected to suitable devices for operating the instrument.

This type The mechanism described is suificient for the purpose of making a circular record on a chart which will be completed at one revolution of the chart. In order to avoid frequent changing of the chart, however, it is desirable to make a record thereon having the duration of several complete rotations of the chart. To accomplish this, mechanism is provided for displacing the chart and stylus with reference to one another every time the chart makes a complete revolution, so that instead of a closed circular record being produced, a spiral record is formed, as indicated bythe line in Figure a. On the diiferent convolutions of this spiral the record indications fill will appear at intervals, the record indications on oneconvolution being distinct from those on the other convolutions, so that the hour and date of each record marking will be apparent.

In order to produce the spiral form of record described, I preferably employ the means shown in which thestylus, stylus carrier and slide 58 are all mounted upon a movable carrier plate 52 which is arranged to be fed gradually in a direction radial to the chart by means driven from the clock mechanism. The carrier plate 52 is provided with slots 83 which slide upon pins 84 carried by a back plate'85 which is fixed to the back of the casing in any suitable manner, as by screws 85 (Figure 3). The carrier plate 52 has a large central slot therein which has an extension portion 9I, a portion of the wall of which is bent up and provided with teeth so as to form a rack 93. Mounted in the back of the casing is a stud which extends forward through the slotflll and is preferably coaxial with the arbor of the clock mechanism which carries the chart table. Mounted on the stud 95 is a bushing 96 to which is fixed a disc 9?. The bushing 96 may be secured to the stud in any suitable manner, for instance by means of a small spring 98 adapted to snap into the groove 99 in' the stud (Figure 2). Fixed to the back of the disc 91 is a scroll I0!) arranged to engage successive teeth'of the rack 93. For rotating the disc and scroll, means are provided for establishinga connection with the clock mechanism. In the construction shown such means consist of a series of pins I85 mounted in openings in the disc and adapted to be yieldingly projected from such openings by means of springs I 06. The pins I 65 are spaced far enough apart so that adjacent pairs of pins can just receive between them one of the spring arms 24 of the chart clamping means. When the instrument casing is opened it will be seen that the cover holding the clock mechanism, chart table and chart clamping arms will swing away from the back :of the casing carrying the stylus actuating mechanism including the discs! and pins I05. When the casing is closed again there will be no interference to such closing by the pins I05 because, if the arms 24 are not in alignment with the spaces between such pins, the pins will be pressed back until the arms 24, which are being continually rotated by the clock mechanism, have moved into alignment with the spaces between two pairs of pins, whereupon the pins will spring out and engage the arms. Thereafter the disc 91 and scroll I00 will be rotated in unison with the chart and for each revolution of the chart the scroll I00 will move the rack 93 a distance of one tooth and will thereby move the carrier plate 52 and stylus for a corresponding distance, so that a spiral record will be produced upon the chart as described. f

For actuating the driving pins 10 which moves thestylus so as to :make the record, suitable means may be employed depending upon the particular application of the instrument. In Figure 8 I have shown a preferred means for actuating this pin applicable to an ordinary door construction. As shown in this figure, the back of the instrument casing III is secured to the face of a door HI near-the edge of the doorattached to the door hinge l H. I I2 represents the door jamb. Aho'le H5 is made in the door parallel to the heathenof, preferably such a vhole as may be bored with an ordinary auger. Before the instrument .is attached to the door a slot or hole H5 is cut in the face of the door into the hole 5. Fitting in the hole H 5 is a tube H1 .in the ends-of which are fitted bushings H8 and l I19, the latter preferably'having a flange I extending beyond the edge of the tube Ill and against theface of the inner edge of the door. Mounted to slide :in the bushings H8 and H9 is a plunger rod J the end of which projects beyond the bushing H9 as indicated at 126. Mounted on the plunger rod inside of the tube H1 is a collar I21 which is slidable inside of the sleeve in. .Mountedon the plunger rod I25 between the end of this collar and the bushing I I8 is a spring 128 which normally urges the plunger out in a direction to project it at I26 beyond the bushing M9. :Rlotatably mounted on the opposite end of the plunger is a plunger head I30 which has a screw threaded hole therein into which screws the threaded end l3l of the driving pin 10. By mounting-the head In on the end of the plunger rod so that it will rotate freely, the pin 10 is allowed to center itself 'properly in the slots through which it passes without danger of binding. Also the operating mechanism of the instrument cannot be injured by 'any one attempting to tamper with the device by rotating the projecting end I26 of the rod.

In mounting the instrument ona door the holes are bored in the door as described and the sleeve and plunger inserted and the pin 10 screwed into the plunger head. The instrument is then screwed on the door over the hole H6, as shown in dotted lines in Figure 8, the pin 10 passing through the slots described. When the instrument casing is locked, it will be seen that the end of the driving pin 10 and heads of the screws H are inside of the casing so that the casing cannot be removed, nor the operating means for the instrument tampered with. When the door is closed the projecting end I25 of the plunger rod is pushed in by contact with the door jamb, and the driving pin 10 is moved along the slot H6 so as to push the slide 58 and thereby rock the stylus, as described, by causing the V-shaped arm 56 to ride out of the notch 59 on to the surface 51. Upon opening the door the spring I38 again projects the end of the plunger rod and the spring 53 returns the stylus to its initial position. The device can be readily applied to doors hinged either on the left, as shown in Figure 8, or upon the right. In the case of a door hinged on the right side, the pin 10 will move the slide 58 in the opposite direction from that illustrated, in which event the arm 56 will ride out of the groove 59 upon the surface 51 at the right hand side of the notch, instead of upon the left hand side, as shown in Figure 7.

A feature of the invention in its preferred form as illustrated herein is that the instrument is mounted on the door near the hinged edge thereof. This has decided advantages over mounting an instrument near the free edge of the door, as in the former position the instrument does not travel as :far or at such high speed and therefore is not subject to shocks and jars of such magnitude as in the case of an instrument mounted in the latter position. Every time the door closes or is slammed an instrument mounted near the outer edge of the door is in danger of being injured, whereas with my preferred construction this is not the case. It is also an advantage to have theoperating mechanism for the instrument extend through the hinged edge of the door where it will be actuated by gentle pressure rather than by a sharp blow as would be the caseif it was upon the free edge of the door. Furthermore, the actuating device at the hinged edge of the door is out of the way and less likely to he tampered with. While I have illustrated and described in detail one preferred form of my invention, it is to be understood that changes may be made therein and the invention embodied in other structures. The form of instrument illustrated may be utilized for making a record of the movements of other devices than a. door, or wherever it is desired to record any lateral or cam motion ofa part adapted to actuate the mechanism. 1 do not, therefore, desire to limit myself to the specific construction illustrated, but intend to cover my invention broadly in whatever form'its principle may be utilized.

I :claim:

1. In a tamper-proof means for recording the opening and closing of doors or the like, the combination with .a hinged door, of a recording instrument mounted thereon, and means for actuating said instrument to make a record including a sleeve mounted in a recess in the hinged edge of the door, a plunger of fixed length mounted to reciprocate in said sleeve, spring means acting to project a portion of said plunger beyond the hinged edge of the door when the door is open, and an operative connection between a part of the plunger inside of said recess in the door and the record making mechanism of the instrument, said operative connection including a head rotatably mounted on the end of the plunger, and a driving pin carried by said head and ex tending through a slot in the door into the instrument.

2. In an instrument for recording the opening and closing of a door or the like, including a casing, and means in the casing for supporting and moving a record surface, in combination, a stylus mounted in said casing in position to mark on the record surface and pivoted to swing about an axis parallel to the record surface, a stylus actuating slide mounted to move in a. plane substantially parallel to said surface, said slide having a cam notch therein, a lever operatively connected with said stylus and having a portion adapted to ride into and out of said cam notch so as to swing said stylus about its pivotal axis, and means for reciprocating said slide.

3. In an instrument for recording the opening and closing of a door or the like, including 2, casing having a back, and a rotary chart carrying table, in combination a carrier plate mounted to reciprocate on said back, a stylus rocker pivotally mounted on said carrier plate, a stylus mounted on said rocker, a lever projecting from said rocker, a slide mounted on said carrier plate to reciprocate in a direction transversely of the direction of reciprocation of said carrier plate, cam means on said slide adapted to engage said lever so as to rocksaid rocker about its pivot, and

means for driving saidstylus carrier plate parallel tothe'face of the chart table.

4. In an'instrument of the character described, including a casing having back and front portions, a rotarychart carrying table'mounted on the front part of the casing, andmeans for clamping a chart onsaid table in position to be marked, in combination, a carrier plate mounted in the back portion of the casing and movable in a plane parallel to the back of the casing, said carrier plate having a rack thereon, a stylus rocker pivoted to said plate, a stylus :carried by said rocker, means for rocking said rocker, ,a 1'0 tary member carried by the back of the casing adapted tobe driven by said chart clamping means, and a scroll carried bysaid rotary member meshing with the teeth of said rack so as to feed said carrier plate, rocker and stylus inv a direction parallel to the'face of a chart'carried by said chart table. I 1 r 5. In an instrument of the character, described, a casing of lesswidth than length having a front and back and parallel side walls, a constantly r0- tating chart carrying table mounted in the casing saidtable being disposed between the side walls and being substantially spaced from said walls to provide clearance and means for clamping on said table a chart of greater diameter than the distance between the parallel side walls but of less diameter than the length of the casing, whereby the margins of said chart are bent over at either side of said table in passing theiside walls, and means for making a record upon an unbent portion-f the margin of the chart between said bent-over portions of the margin.

6. In an instrument of the character described, a casing of less width than length having a back portion provided with parallel side walls having smooth inner surfaces and having a front portion movably mounted with respect to said back portion, a constantly rotating table'mounted on the front portion-of the casing for carrying a chart of greater diameter than the distance between the side walls of the back portion of the casing, said table being disposed between the side walls to provide clearance, a platen mounted in one end of the front portion of the casing behind the marginal portion of the chart outside the bounds of the table, and between the'planes of the side walls of the back portion of the casing, chart guiding means carried by the back portion ofthe casing and adapted to engage the face of the chart adjacent to said platen and hold the same in contact therewith. when the casing is closed; and a stylus carried by the'backporti'on of the casing and. adapted to engage the face of the chart over said platen. r 7.'Ina tampereproof means for recording'the opening and closing of doors or the like, the combination with 'a'hinged door, of a plunger or fixed length mounted in a recess in the hinged edge of the door and having a portion projecting from the hinged edge of the door when the door is open, said projecting portion being adapted to be pushed into the recess of the door by contact with the face of the door jamb when the door is closed, there being a slot formed in the side of the door communicating with the recess in which the plunger reciprocates, and arecording instrument having a casing comprising front and back parts, means for attaching'theba'ck of the casing to the door over'the slot in'the side thereof, said casing back having an opening therein registering with said slot, an inaccessible pin carried by said plunger projecting through said slotand opening in the back of said casing into the interior of the casing, a stylus movably carried by the back part of the casing, and an actuating de- HENRY R. 0001,.

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