US2540244A

US2540244A - Book opening and closing device

Info

Publication number: US2540244A
Application number: US697356A
Authority: US
Inventors: Campbell Charles Homer
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-09-16
Filing date: 1946-09-16
Publication date: 1951-02-06
Anticipated expiration: 1968-02-06

Description

Feb. 6, 1951 c CAMPBELL 2,540,244

BOOK OPENING AND CLOSING DEVICE Filed Sept. 16, 1946 2 Sheets-Sheet l Cbarfea Home)" Cam 25b eff.

Feb. 6, 1951 Filed Sept. 16, 1946 C. H. CAMPBELL BOOK OPENING AND CLOSING DEVICE 2 Sheets-Sheet 2 I m'eutor Char/e5 1%))??? Cam b52121 mdflzway 15. m

Patented Feb. 6, 1951 UNITED STATES PATENT OFFICE BOOK' OPENING" AND OLOSI'NGDEVI'CE Charles Homer Campbell, Fort Wayne, Ind.

Applications'eptember 16, 1946; SerialNo; 697,356

4 Claims.

This invention relates to a new and useful imhidden from view, creates an impressive effect when in operation.

Another-object-of the invention is toprovide abook openingand closing device which is-simple in-construction and which may be easily and conveniently manipulated.

An additional object of the invention is-to provideabook opening and closing. device which will not easily become damaged and which will readily lend itself-to economical manufacture;

With the abovemore important objects in View, and such otherobj ects as may become apparent asthis specification proceeds, the invention consists essentially of the arrangement and construction of parts as illustrated in the accompanying drawings, in which:

' Figure-l is a front elevation of the invention". Figure 2 is a top plan View thereof. 7

Figure 3 isa' cross sectional view, taken substantially on the plane of the line-3-3 in Figure 2;and'

Figure 4 -is-a--perspective view of an extension arm and spacing bracket used in the invention, thesame being shown in association with a book indicated-by phantom lines.

Figure 5 is a schematic diagram illustrating an electricalcircuit adapted' for use with the present invention Like characters of reference: aroused to desi nate like parts in the specificationand throughout the several views.

Re-ferringnow to the accompanying drawings in" detail,- the invention consists-of a book opening-and closing device-des gnated generally by the reference character the same embodying in its construction a base ll configurated substantially as shown and provided with an inclined upper surface or platform [2, onwhich a book l3 may be positioned. The lower edge of the base ll may, if desired, include an upstanding ledge l4, such as would normally be employed to prevent the book from sliding downwardly from the platform 12. In the instant invention, however, the ledge I4 is purely ornamental, since the book 13 is firmly secured to the base by means of suitable screws or rivets 15 which pass through apertures 16 formed'in one of the book covers [1 and through further apertures I8 provided the platform l2.

The upper edge of the base I! is provided'with a further ledge l9; formed with-a substantially semicircular, centrally disposed shield 20: Itwill be noted'that the ledge I9and the shield 20 are disposed substantially at right angles-to the plane of the platform 12.

A mounting bracket 2'! is secured as at 2 2 to' the upper edge portion of the base I I; the-bracket 2! being more'or less L-shap'ed andsupporting amotor 23- which is designed to rotate-at the speed of approximately one revolution'per minute. The motor 23 is secured'to the bracket-2| as at 2 ij The armature shaft 25 of themotor 23 is-dis-' posed in a plane parallel to the plane of the platform 1 l2, and a lever 26 is secured'atone end': thereof to the armature shaft, as is best shownin Figure 2. The remainingend portion of'th'e lever 26 is angulated as at 21 and constitutes what may be ref rred to as an extensionarm- 28? The arm 28 extends-in a fiat, parallel relationship to the platform l2, and a pair of substan tially U-shaped spacingbrack'ets 29- are Welded or otherwise suitably securedto the arm 28, as is best shown in Figures 3' and 4. These bracketsare disposed in an opposed relation, so to speak, and the free arms of the brackets are secured by suitable screws or rivets 30 to the remaining cover 3! of the book [3; It will be noted that. in this manner, the arm 28- willbe rigidly secured. in spaced relation to the cover 3|.

Finally, a pair of limit switches'32, 33 ofsuit able type, are attached to-the base If at the relatively opposite sides of the motor 23, the aforementioned lever 26- being' engageable'witli' these switches, as will be hereinafter morefully described.

When the invention is placed in use, thebboli I3 is positioned upon and secured to the platform 52 bymeans-ofthebblts or rivets l5; as has been already explained.

Thereupon, approximately one half of the pages 34 of the book are inserted between the cover 3| and the arm 28 while the remaining pages are, of course, disposed between the arm 28 and the cover l1.

Assuming the book to be in the open position, substantially as shown in Figure 4, the three pole, triple throw reversing switch 36 is moved to the close position. Current will now flow to the motor 23 from the source 40 by the lead 38, through the movable contact arm 42 to the limit switch 33 and by way of the terminal 44 to one side 46 of a first phase winding, through the winding to the end 48 and back to the other side of the source 40 by the lead 53). Further, from the

ends

46, 48, leads 52, 56 will carry current by the

movable arms

54, 58 of the switch 36 to the second phase winding of the motor. This action causes the motor 23 to rotate or swing the lever 26 and the associated arm 28 so as to close the book, this being best shown in Figures 3 and 5.

The closing action is facilitated by the rigid connection of the arm 28 to the cover 3| (through the medium of the brackets 29) and by the positioning of the adjacent half of the book pages between the arm 28 and the cover 3|. When the book is fully closed, the lever 26 will contact the switch 53, thereby opening the electrical circuit to the motor 23 and preventing further actuation of the device in that direction.

When it is desired to open the book, the flow of current through the motor 23 is reversed by throwing the switch 36 to the open position, whereby the lever 28 and the associated arm 23 will be caused to rotate in the relatively opposite direction until the book is fully opened. It will i be noted that the switch 36 both bypasses the limit switch 33 allowing current to flow to the motor through the switch 32 and further reverses the connections to the second phase winding of the motor whereby reversed rotation is effected.

At the open position of the book, the lever 26 will contact the limit switch 32 and further actuation of the device in that direction will again be prevented.

It will be noted from the foregoing that the device is intends to open the book at one predetermined page, that is, no means are provided for selective opening at any page such as may be required. This is because the device is primarily intended for display purposes, such as in churches at the beginning and end of the religious ceremony. In such instance, the opening and closing of the book will cr ate an impressive efiect, since the mechanism involved, particularly the motor 23 and the associated lever 26, is completely hidden from view by the shield 20 and the ledge H9. The book, therefore, is not used for the religious service, the minister having an- Qther Bible on his pulpit.

1 It is believed that the advantages and use of the invention will be clearly understood from the foregoing disclosure and accordingly, further description thereof at this point is considered unnecessary.

While in the foregoing there has been shown and described the preferred embodiment of this invention it is to be understood that minor changes in the details of construction, combination and arrangement of parts may be resorted to without departing from the spirit and scope of I the invention as claimed.

What I claim as my invention is: 1. Means for opening and closing a book in a predetermined position comprising a base sup- 65 port for a book having a pair of cover members, one of the covers being secured to the base, a prime mover having an armature shaft carried by said base in spaced proximity to said book, an angular extension arm secured to said shaft and positioned in the book to overlie one of the pages therein, connectors secured to said extension arm and secured to the unattached cover, motor stop elements positioned on said base on each side of the motor and adapted to be engaged by said lever.

2. Means for opening and closing a book in a predetermined position comprising a base support for a book having a pair of cover'members, one of the covers being secured to the base, a prime mover having an armature shaft carried by said base in spaced proximity to said book,

a member positioned in the book and overlying one of the selected pages therein, a lateral extension on one end of the arm, said extensions being connected to the armature shaft, bracket members carried by the opposing ends of the member and attached to the free cover, motor stop elements positioned on said base on each side of the motor and adapted to be engaged by said extension.

3. A book opening and closing apparatus including a base adapted to support a book having one of its covers secured thereto, an electric motor mounted on the base, an arm transversely secured to the shaft and extendin upwardly above one end of the book, a lateral extension on the arm, said extension being positioned in the book and overlying one of the pages therein and bracket members carried by the opposing ends of the extensions and secured to the free cover whereby a plurality of pages are held between the extension and the cover.

4. A book opening and closing apparatus including a base adapted to support a book having one of its covers secured thereto, an electric motor mounted on the base, an arm transversely secured to the shaft and extending upwardly aboveone end of the book, a lateral extension on the arm, said extension being positioned in the book and overlying one of the pages therein and bracket members carried by the Opposing ends of the extension and secured to the free cover whereby a plurality of pages are held between the extension and the cover, and stop switches disposed on opposite sides of the motor and actuated by the arm upon predetermined movement thereof to hold the book open at the selected page orclosed.

CHARLES HOMER CAMPBELL.

REFERENCES CITED The following references are of record inthe file of this patent:

UNITED STATES PATENTS Date Brown Feb. 9, 1937