Pictures and text¹ of my Fall 2005 MTWCA Display

Gadgets, Gizmos, and Mechanical Marvels

(Gadgets, Gizmos, and Mechanical Marvels was the theme of the Fall 2005 tool meet.)

You can't beat the collection of gadgets, gizmos, and mechanical marvels found at the United States Patent and Trademark Office ( In 1974 Parker Brothers produced the game displayed here. It is based on twelve actual patents each of which could be described as a gadgets, gizmo, or mechanical marvel.

Game within a Game

The game cards include the issue dates but not the patent numbers. Finding the patents online became a game for me. The USPTO web site only allows patent number and category searches for patents issued before 1976. Fortunately (Directory of American Tool and Machinery Patents) was created to help store patented tool data. It currently holds over 21,000 tool patents with more being added. This site allows searches by patentee, manufacturer, issue date etc. I used to find patent numbers of tools issued on the same days as the game's patents. Armed with approximate patent numbers I was able to find the game's patents on the USPTO site.

Join the fun

I'm one of the volunteers who enters tool patents at Among the patents I have entered are 11 of the games patents. One of the other volunteers had already entered the dimple making patent! A page of data for each of these patents as well as over 21,000 tool patents can be found at Contact me if you have patent information in electronic form that you would like to contribute to datamp. Datamp is also looking for volunteers to help enter patents. Join in on the fun of finding and categorizing gadgets, gizmo, and mechanical marvels.

Sample search

Here's how the search for the Adjustable Clothes Pins went¹.

Step one: determine a likely patent classification:

I did a title search on the USPTO site for clothes pin in the "modern" patents (post 1975 patents are fully searchable). The search criteria was: ttl/"clothes pin" (in English that's a title search for clothes pin) Eleven patents were returned. I clicked on 4,945,613 to find its Current U.S. Classes: 24/501; 24/511

Step two: Issue a search in the non-modern (pre-1976) section where the only criteria allowed are patent number, classification and/or issue date. Fortunately wildcards are allowed on the advanced search page. My search was Query: "isd/11/9/1915 and ccl/24/$" Select years: "1976 to present [full-text]" (quotes not entered in the query box). In English that's a patent issued on November 9, 1915 that is in classification 24 with any sub classification (there are usually a hundred or more sub classifications per class).

Fourteen patents meet this criteria. An image of each patent is displayed after clicking on the links returned from the USPTO site*. The sixth one returned was the one I was looking for.

* You need to load a tiff viewer (the graphic format used by the USPTO site). A free viewer is available from You do not need anything special to view the patents at [edit recently the uspto has switched to displaying patents as pdfs! A tiff viewer is no longer required.]

Here are a few useful patent links:

Patents from the Parker Brother's Inventors Game

Home| FAQSearch:Advanced|Person|Company| Type|Class

Patents for Parker Brothers
Patents 1 - 12 of 12
First set of recordsLast set of records
18,691Nov. 24, 1857S.P. HeintzelmanHorse water wing jacket
92,379Jul. 06, 1869C. SingerAir conditioned rocking chair
221,855Nov. 18, 1879B.B. OppenheimerParachute hat
256,265Apr. 11, 1882S.S. ApplegateEZ wake alarm
305,102Sep. 16, 1884J.H. NelsonLight up mouse frightener
363,037May 17, 1887C.R. WulffBird powered flying machine
490,964Jan. 31, 1893T.W. HelmCombined clothes brush, flask and drinking cup
556,248Mar. 10, 1896J.C. BoyleTipping cap
560,351May 19, 1896M. GoetzeDevice For Producing Dimples (human)
730,918Jun. 16, 1903A. Jackson, JrEye protector for chickens
1,159,804Nov. 09, 1915R.J. SchulzAdjustable clothes pins
1,175,513Mar. 14, 1916L.W. FlyntPounds away weight reducer

Copyright 2002-2005 - DATAMP.ORG


¹ I've update the search example. Recently the ability to search by issue date was added to the pre-1976 patents!
Also there are now over 51,000 tool patents in datamp.